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Comparing libev/ev.c (file contents):
Revision 1.412 by root, Wed Feb 22 01:53:00 2012 UTC vs.
Revision 1.523 by root, Tue Jan 21 23:52:35 2020 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
115# else 115# else
116# undef EV_USE_EPOLL 116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0 117# define EV_USE_EPOLL 0
118# endif 118# endif
119 119
120# if HAVE_LINUX_AIO_ABI_H
121# ifndef EV_USE_LINUXAIO
122# define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */
123# endif
124# else
125# undef EV_USE_LINUXAIO
126# define EV_USE_LINUXAIO 0
127# endif
128
129# if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T
130# ifndef EV_USE_IOURING
131# define EV_USE_IOURING EV_FEATURE_BACKENDS
132# endif
133# else
134# undef EV_USE_IOURING
135# define EV_USE_IOURING 0
136# endif
137
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 138# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE 139# ifndef EV_USE_KQUEUE
122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 140# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
123# endif 141# endif
124# else 142# else
… …
159# endif 177# endif
160# else 178# else
161# undef EV_USE_EVENTFD 179# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0 180# define EV_USE_EVENTFD 0
163# endif 181# endif
164 182
183# if HAVE_SYS_TIMERFD_H
184# ifndef EV_USE_TIMERFD
185# define EV_USE_TIMERFD EV_FEATURE_OS
186# endif
187# else
188# undef EV_USE_TIMERFD
189# define EV_USE_TIMERFD 0
165#endif 190# endif
191
192#endif
193
194/* OS X, in its infinite idiocy, actually HARDCODES
195 * a limit of 1024 into their select. Where people have brains,
196 * OS X engineers apparently have a vacuum. Or maybe they were
197 * ordered to have a vacuum, or they do anything for money.
198 * This might help. Or not.
199 * Note that this must be defined early, as other include files
200 * will rely on this define as well.
201 */
202#define _DARWIN_UNLIMITED_SELECT 1
166 203
167#include <stdlib.h> 204#include <stdlib.h>
168#include <string.h> 205#include <string.h>
169#include <fcntl.h> 206#include <fcntl.h>
170#include <stddef.h> 207#include <stddef.h>
… …
201# include <sys/wait.h> 238# include <sys/wait.h>
202# include <unistd.h> 239# include <unistd.h>
203#else 240#else
204# include <io.h> 241# include <io.h>
205# define WIN32_LEAN_AND_MEAN 242# define WIN32_LEAN_AND_MEAN
243# include <winsock2.h>
206# include <windows.h> 244# include <windows.h>
207# ifndef EV_SELECT_IS_WINSOCKET 245# ifndef EV_SELECT_IS_WINSOCKET
208# define EV_SELECT_IS_WINSOCKET 1 246# define EV_SELECT_IS_WINSOCKET 1
209# endif 247# endif
210# undef EV_AVOID_STDIO 248# undef EV_AVOID_STDIO
211#endif 249#endif
212 250
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
220
221/* this block tries to deduce configuration from header-defined symbols and defaults */ 251/* this block tries to deduce configuration from header-defined symbols and defaults */
222 252
223/* try to deduce the maximum number of signals on this platform */ 253/* try to deduce the maximum number of signals on this platform */
224#if defined (EV_NSIG) 254#if defined EV_NSIG
225/* use what's provided */ 255/* use what's provided */
226#elif defined (NSIG) 256#elif defined NSIG
227# define EV_NSIG (NSIG) 257# define EV_NSIG (NSIG)
228#elif defined(_NSIG) 258#elif defined _NSIG
229# define EV_NSIG (_NSIG) 259# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX) 260#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1) 261# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX) 262#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1) 263# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX) 264#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1) 265# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG) 266#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1) 267# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG) 268#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1) 269# define EV_NSIG (MAX_SIG+1)
240#elif defined (SIGARRAYSIZE) 270#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 271# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined (_sys_nsig) 272#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 273# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else 274#else
245# error "unable to find value for NSIG, please report" 275# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif 276#endif
250 277
251#ifndef EV_USE_FLOOR 278#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0 279# define EV_USE_FLOOR 0
253#endif 280#endif
254 281
255#ifndef EV_USE_CLOCK_SYSCALL 282#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2 283# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 284# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else 285# else
259# define EV_USE_CLOCK_SYSCALL 0 286# define EV_USE_CLOCK_SYSCALL 0
260# endif 287# endif
261#endif 288#endif
262 289
290#if !(_POSIX_TIMERS > 0)
291# ifndef EV_USE_MONOTONIC
292# define EV_USE_MONOTONIC 0
293# endif
294# ifndef EV_USE_REALTIME
295# define EV_USE_REALTIME 0
296# endif
297#endif
298
263#ifndef EV_USE_MONOTONIC 299#ifndef EV_USE_MONOTONIC
264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 300# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
265# define EV_USE_MONOTONIC EV_FEATURE_OS 301# define EV_USE_MONOTONIC EV_FEATURE_OS
266# else 302# else
267# define EV_USE_MONOTONIC 0 303# define EV_USE_MONOTONIC 0
268# endif 304# endif
269#endif 305#endif
… …
306 342
307#ifndef EV_USE_PORT 343#ifndef EV_USE_PORT
308# define EV_USE_PORT 0 344# define EV_USE_PORT 0
309#endif 345#endif
310 346
347#ifndef EV_USE_LINUXAIO
348# if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */
349# define EV_USE_LINUXAIO 0 /* was: 1, always off by default */
350# else
351# define EV_USE_LINUXAIO 0
352# endif
353#endif
354
355#ifndef EV_USE_IOURING
356# if __linux /* later checks might disable again */
357# define EV_USE_IOURING 1
358# else
359# define EV_USE_IOURING 0
360# endif
361#endif
362
311#ifndef EV_USE_INOTIFY 363#ifndef EV_USE_INOTIFY
312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 364# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
313# define EV_USE_INOTIFY EV_FEATURE_OS 365# define EV_USE_INOTIFY EV_FEATURE_OS
314# else 366# else
315# define EV_USE_INOTIFY 0 367# define EV_USE_INOTIFY 0
… …
338# else 390# else
339# define EV_USE_SIGNALFD 0 391# define EV_USE_SIGNALFD 0
340# endif 392# endif
341#endif 393#endif
342 394
395#ifndef EV_USE_TIMERFD
396# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8))
397# define EV_USE_TIMERFD EV_FEATURE_OS
398# else
399# define EV_USE_TIMERFD 0
400# endif
401#endif
402
343#if 0 /* debugging */ 403#if 0 /* debugging */
344# define EV_VERIFY 3 404# define EV_VERIFY 3
345# define EV_USE_4HEAP 1 405# define EV_USE_4HEAP 1
346# define EV_HEAP_CACHE_AT 1 406# define EV_HEAP_CACHE_AT 1
347#endif 407#endif
… …
356 416
357#ifndef EV_HEAP_CACHE_AT 417#ifndef EV_HEAP_CACHE_AT
358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 418# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif 419#endif
360 420
421#ifdef __ANDROID__
422/* supposedly, android doesn't typedef fd_mask */
423# undef EV_USE_SELECT
424# define EV_USE_SELECT 0
425/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
426# undef EV_USE_CLOCK_SYSCALL
427# define EV_USE_CLOCK_SYSCALL 0
428#endif
429
430/* aix's poll.h seems to cause lots of trouble */
431#ifdef _AIX
432/* AIX has a completely broken poll.h header */
433# undef EV_USE_POLL
434# define EV_USE_POLL 0
435#endif
436
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 437/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */ 438/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL 439#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h> 440# include <sys/syscall.h>
365# ifdef SYS_clock_gettime 441# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 442# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC 443# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1 444# define EV_USE_MONOTONIC 1
445# define EV_NEED_SYSCALL 1
369# else 446# else
370# undef EV_USE_CLOCK_SYSCALL 447# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0 448# define EV_USE_CLOCK_SYSCALL 0
372# endif 449# endif
373#endif 450#endif
374 451
375/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 452/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376 453
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
383#ifndef CLOCK_MONOTONIC 454#ifndef CLOCK_MONOTONIC
384# undef EV_USE_MONOTONIC 455# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 0 456# define EV_USE_MONOTONIC 0
386#endif 457#endif
387 458
… …
393#if !EV_STAT_ENABLE 464#if !EV_STAT_ENABLE
394# undef EV_USE_INOTIFY 465# undef EV_USE_INOTIFY
395# define EV_USE_INOTIFY 0 466# define EV_USE_INOTIFY 0
396#endif 467#endif
397 468
469#if __linux && EV_USE_IOURING
470# include <linux/version.h>
471# if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
472# undef EV_USE_IOURING
473# define EV_USE_IOURING 0
474# endif
475#endif
476
398#if !EV_USE_NANOSLEEP 477#if !EV_USE_NANOSLEEP
399/* hp-ux has it in sys/time.h, which we unconditionally include above */ 478/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux) 479# if !defined _WIN32 && !defined __hpux
401# include <sys/select.h> 480# include <sys/select.h>
481# endif
482#endif
483
484#if EV_USE_LINUXAIO
485# include <sys/syscall.h>
486# if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */
487# define EV_NEED_SYSCALL 1
488# else
489# undef EV_USE_LINUXAIO
490# define EV_USE_LINUXAIO 0
491# endif
492#endif
493
494#if EV_USE_IOURING
495# include <sys/syscall.h>
496# if !SYS_io_uring_setup && __linux && !__alpha
497# define SYS_io_uring_setup 425
498# define SYS_io_uring_enter 426
499# define SYS_io_uring_wregister 427
500# endif
501# if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */
502# define EV_NEED_SYSCALL 1
503# else
504# undef EV_USE_IOURING
505# define EV_USE_IOURING 0
402# endif 506# endif
403#endif 507#endif
404 508
405#if EV_USE_INOTIFY 509#if EV_USE_INOTIFY
406# include <sys/statfs.h> 510# include <sys/statfs.h>
… …
410# undef EV_USE_INOTIFY 514# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0 515# define EV_USE_INOTIFY 0
412# endif 516# endif
413#endif 517#endif
414 518
415#if EV_SELECT_IS_WINSOCKET
416# include <winsock.h>
417#endif
418
419#if EV_USE_EVENTFD 519#if EV_USE_EVENTFD
420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 520/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
421# include <stdint.h> 521# include <stdint.h>
422# ifndef EFD_NONBLOCK 522# ifndef EFD_NONBLOCK
423# define EFD_NONBLOCK O_NONBLOCK 523# define EFD_NONBLOCK O_NONBLOCK
424# endif 524# endif
425# ifndef EFD_CLOEXEC 525# ifndef EFD_CLOEXEC
… …
431# endif 531# endif
432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); 532EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
433#endif 533#endif
434 534
435#if EV_USE_SIGNALFD 535#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 536/* our minimum requirement is glibc 2.7 which has the stub, but not the full header */
437# include <stdint.h> 537# include <stdint.h>
438# ifndef SFD_NONBLOCK 538# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK 539# define SFD_NONBLOCK O_NONBLOCK
440# endif 540# endif
441# ifndef SFD_CLOEXEC 541# ifndef SFD_CLOEXEC
… …
443# define SFD_CLOEXEC O_CLOEXEC 543# define SFD_CLOEXEC O_CLOEXEC
444# else 544# else
445# define SFD_CLOEXEC 02000000 545# define SFD_CLOEXEC 02000000
446# endif 546# endif
447# endif 547# endif
448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); 548EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags);
449 549
450struct signalfd_siginfo 550struct signalfd_siginfo
451{ 551{
452 uint32_t ssi_signo; 552 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)]; 553 char pad[128 - sizeof (uint32_t)];
454}; 554};
455#endif 555#endif
456 556
457/**/ 557/* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */
558#if EV_USE_TIMERFD
559# include <sys/timerfd.h>
560/* timerfd is only used for periodics */
561# if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE
562# undef EV_USE_TIMERFD
563# define EV_USE_TIMERFD 0
564# endif
565#endif
566
567/*****************************************************************************/
458 568
459#if EV_VERIFY >= 3 569#if EV_VERIFY >= 3
460# define EV_FREQUENT_CHECK ev_verify (EV_A) 570# define EV_FREQUENT_CHECK ev_verify (EV_A)
461#else 571#else
462# define EV_FREQUENT_CHECK do { } while (0) 572# define EV_FREQUENT_CHECK do { } while (0)
… …
467 * This value is good at least till the year 4000. 577 * This value is good at least till the year 4000.
468 */ 578 */
469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ 579#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ 580/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 581
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 582#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 583#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
584#define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */
474 585
586/* find a portable timestamp that is "always" in the future but fits into time_t.
587 * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t,
588 * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */
589#define EV_TSTAMP_HUGE \
590 (sizeof (time_t) >= 8 ? 10000000000000. \
591 : 0 < (time_t)4294967295 ? 4294967295. \
592 : 2147483647.) \
593
594#ifndef EV_TS_CONST
595# define EV_TS_CONST(nv) nv
596# define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999
597# define EV_TS_FROM_USEC(us) us * 1e-6
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 598# define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 599# define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
600# define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6)
601# define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9)
602#endif
477 603
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 604/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */ 605/* ECB.H BEGIN */
480/* 606/*
481 * libecb - http://software.schmorp.de/pkg/libecb 607 * libecb - http://software.schmorp.de/pkg/libecb
482 * 608 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> 609 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta 610 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved. 611 * All rights reserved.
486 * 612 *
487 * Redistribution and use in source and binary forms, with or without modifica- 613 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met: 614 * tion, are permitted provided that the following conditions are met:
… …
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 628 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 629 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 630 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 631 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE. 632 * OF THE POSSIBILITY OF SUCH DAMAGE.
633 *
634 * Alternatively, the contents of this file may be used under the terms of
635 * the GNU General Public License ("GPL") version 2 or any later version,
636 * in which case the provisions of the GPL are applicable instead of
637 * the above. If you wish to allow the use of your version of this file
638 * only under the terms of the GPL and not to allow others to use your
639 * version of this file under the BSD license, indicate your decision
640 * by deleting the provisions above and replace them with the notice
641 * and other provisions required by the GPL. If you do not delete the
642 * provisions above, a recipient may use your version of this file under
643 * either the BSD or the GPL.
507 */ 644 */
508 645
509#ifndef ECB_H 646#ifndef ECB_H
510#define ECB_H 647#define ECB_H
648
649/* 16 bits major, 16 bits minor */
650#define ECB_VERSION 0x00010008
651
652#include <string.h> /* for memcpy */
511 653
512#ifdef _WIN32 654#ifdef _WIN32
513 typedef signed char int8_t; 655 typedef signed char int8_t;
514 typedef unsigned char uint8_t; 656 typedef unsigned char uint8_t;
657 typedef signed char int_fast8_t;
658 typedef unsigned char uint_fast8_t;
515 typedef signed short int16_t; 659 typedef signed short int16_t;
516 typedef unsigned short uint16_t; 660 typedef unsigned short uint16_t;
661 typedef signed int int_fast16_t;
662 typedef unsigned int uint_fast16_t;
517 typedef signed int int32_t; 663 typedef signed int int32_t;
518 typedef unsigned int uint32_t; 664 typedef unsigned int uint32_t;
665 typedef signed int int_fast32_t;
666 typedef unsigned int uint_fast32_t;
519 #if __GNUC__ 667 #if __GNUC__
520 typedef signed long long int64_t; 668 typedef signed long long int64_t;
521 typedef unsigned long long uint64_t; 669 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */ 670 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t; 671 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t; 672 typedef unsigned __int64 uint64_t;
525 #endif 673 #endif
674 typedef int64_t int_fast64_t;
675 typedef uint64_t uint_fast64_t;
676 #ifdef _WIN64
677 #define ECB_PTRSIZE 8
678 typedef uint64_t uintptr_t;
679 typedef int64_t intptr_t;
680 #else
681 #define ECB_PTRSIZE 4
682 typedef uint32_t uintptr_t;
683 typedef int32_t intptr_t;
684 #endif
526#else 685#else
527 #include <inttypes.h> 686 #include <inttypes.h>
687 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
688 #define ECB_PTRSIZE 8
689 #else
690 #define ECB_PTRSIZE 4
691 #endif
692#endif
693
694#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
695#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
696
697#ifndef ECB_OPTIMIZE_SIZE
698 #if __OPTIMIZE_SIZE__
699 #define ECB_OPTIMIZE_SIZE 1
700 #else
701 #define ECB_OPTIMIZE_SIZE 0
702 #endif
703#endif
704
705/* work around x32 idiocy by defining proper macros */
706#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
707 #if _ILP32
708 #define ECB_AMD64_X32 1
709 #else
710 #define ECB_AMD64 1
711 #endif
528#endif 712#endif
529 713
530/* many compilers define _GNUC_ to some versions but then only implement 714/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions, 715 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers. 716 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so. 717 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have 718 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place. 719 * an issue with that they should have done it right in the first place.
536 */ 720 */
537#ifndef ECB_GCC_VERSION
538 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 721#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0 722 #define ECB_GCC_VERSION(major,minor) 0
540 #else 723#else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 724 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542 #endif 725#endif
726
727#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
728
729#if __clang__ && defined __has_builtin
730 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
731#else
732 #define ECB_CLANG_BUILTIN(x) 0
733#endif
734
735#if __clang__ && defined __has_extension
736 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
737#else
738 #define ECB_CLANG_EXTENSION(x) 0
739#endif
740
741#define ECB_CPP (__cplusplus+0)
742#define ECB_CPP11 (__cplusplus >= 201103L)
743#define ECB_CPP14 (__cplusplus >= 201402L)
744#define ECB_CPP17 (__cplusplus >= 201703L)
745
746#if ECB_CPP
747 #define ECB_C 0
748 #define ECB_STDC_VERSION 0
749#else
750 #define ECB_C 1
751 #define ECB_STDC_VERSION __STDC_VERSION__
752#endif
753
754#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
755#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
756#define ECB_C17 (ECB_STDC_VERSION >= 201710L)
757
758#if ECB_CPP
759 #define ECB_EXTERN_C extern "C"
760 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
761 #define ECB_EXTERN_C_END }
762#else
763 #define ECB_EXTERN_C extern
764 #define ECB_EXTERN_C_BEG
765 #define ECB_EXTERN_C_END
543#endif 766#endif
544 767
545/*****************************************************************************/ 768/*****************************************************************************/
546 769
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 770/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 771/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549 772
550#if ECB_NO_THREADS 773#if ECB_NO_THREADS
551# define ECB_NO_SMP 1 774 #define ECB_NO_SMP 1
552#endif 775#endif
553 776
554#if ECB_NO_THREADS || ECB_NO_SMP 777#if ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0) 778 #define ECB_MEMORY_FENCE do { } while (0)
556#endif 779#endif
557 780
781/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
782#if __xlC__ && ECB_CPP
783 #include <builtins.h>
784#endif
785
786#if 1400 <= _MSC_VER
787 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
788#endif
789
558#ifndef ECB_MEMORY_FENCE 790#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 791 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
792 #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory")
560 #if __i386 || __i386__ 793 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 794 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 795 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 796 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ 797 #elif ECB_GCC_AMD64
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 798 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 799 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 800 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory")
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 801 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 802 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
803 #elif defined __ARM_ARCH_2__ \
804 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
805 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
806 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
807 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
808 || defined __ARM_ARCH_5TEJ__
809 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
570 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 810 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 811 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
812 || defined __ARM_ARCH_6T2__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 813 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 814 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 815 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 816 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__ 817 #elif __aarch64__
818 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
819 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory") 820 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") 821 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") 822 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__) 823 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") 824 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined(__mips__) 825 #elif defined __mips__
826 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
827 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
828 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
829 #elif defined __alpha__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 830 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
831 #elif defined __hppa__
832 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
833 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
834 #elif defined __ia64__
835 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
836 #elif defined __m68k__
837 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
838 #elif defined __m88k__
839 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
840 #elif defined __sh__
841 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
584 #endif 842 #endif
585 #endif 843 #endif
586#endif 844#endif
587 845
588#ifndef ECB_MEMORY_FENCE 846#ifndef ECB_MEMORY_FENCE
847 #if ECB_GCC_VERSION(4,7)
848 /* see comment below (stdatomic.h) about the C11 memory model. */
849 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
850 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
851 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
852 #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED)
853
854 #elif ECB_CLANG_EXTENSION(c_atomic)
855 /* see comment below (stdatomic.h) about the C11 memory model. */
856 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
857 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
858 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
859 #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED)
860
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 861 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
590 #define ECB_MEMORY_FENCE __sync_synchronize () 862 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 863 #elif _MSC_VER >= 1500 /* VC++ 2008 */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 864 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
865 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
866 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
867 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
868 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 869 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 870 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 871 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 872 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 873 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32) 874 #elif defined _WIN32
599 #include <WinNT.h> 875 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 876 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 877 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h> 878 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier () 879 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () 880 #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () 881 #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier ()
882 #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier ()
883 #elif __xlC__
884 #define ECB_MEMORY_FENCE __sync ()
885 #endif
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
890 /* we assume that these memory fences work on all variables/all memory accesses, */
891 /* not just C11 atomics and atomic accesses */
892 #include <stdatomic.h>
893 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
894 #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire)
895 #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release)
606 #endif 896 #endif
607#endif 897#endif
608 898
609#ifndef ECB_MEMORY_FENCE 899#ifndef ECB_MEMORY_FENCE
610 #if !ECB_AVOID_PTHREADS 900 #if !ECB_AVOID_PTHREADS
… …
622 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 912 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
623 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 913 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
624 #endif 914 #endif
625#endif 915#endif
626 916
627#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 917#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
628 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 918 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
629#endif 919#endif
630 920
631#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 921#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 922 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
633#endif 923#endif
634 924
925#if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE
926 #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */
927#endif
928
635/*****************************************************************************/ 929/*****************************************************************************/
636 930
637#define ECB_C99 (__STDC_VERSION__ >= 199901L) 931#if ECB_CPP
638
639#if __cplusplus
640 #define ecb_inline static inline 932 #define ecb_inline static inline
641#elif ECB_GCC_VERSION(2,5) 933#elif ECB_GCC_VERSION(2,5)
642 #define ecb_inline static __inline__ 934 #define ecb_inline static __inline__
643#elif ECB_C99 935#elif ECB_C99
644 #define ecb_inline static inline 936 #define ecb_inline static inline
… …
658 950
659#define ECB_CONCAT_(a, b) a ## b 951#define ECB_CONCAT_(a, b) a ## b
660#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 952#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
661#define ECB_STRINGIFY_(a) # a 953#define ECB_STRINGIFY_(a) # a
662#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 954#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
955#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
663 956
664#define ecb_function_ ecb_inline 957#define ecb_function_ ecb_inline
665 958
666#if ECB_GCC_VERSION(3,1) 959#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
667 #define ecb_attribute(attrlist) __attribute__(attrlist) 960 #define ecb_attribute(attrlist) __attribute__ (attrlist)
961#else
962 #define ecb_attribute(attrlist)
963#endif
964
965#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
668 #define ecb_is_constant(expr) __builtin_constant_p (expr) 966 #define ecb_is_constant(expr) __builtin_constant_p (expr)
967#else
968 /* possible C11 impl for integral types
969 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
970 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
971
972 #define ecb_is_constant(expr) 0
973#endif
974
975#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
669 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 976 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
977#else
978 #define ecb_expect(expr,value) (expr)
979#endif
980
981#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
670 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 982 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
671#else 983#else
672 #define ecb_attribute(attrlist)
673 #define ecb_is_constant(expr) 0
674 #define ecb_expect(expr,value) (expr)
675 #define ecb_prefetch(addr,rw,locality) 984 #define ecb_prefetch(addr,rw,locality)
676#endif 985#endif
677 986
678/* no emulation for ecb_decltype */ 987/* no emulation for ecb_decltype */
679#if ECB_GCC_VERSION(4,5) 988#if ECB_CPP11
989 // older implementations might have problems with decltype(x)::type, work around it
990 template<class T> struct ecb_decltype_t { typedef T type; };
680 #define ecb_decltype(x) __decltype(x) 991 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
681#elif ECB_GCC_VERSION(3,0) 992#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
682 #define ecb_decltype(x) __typeof(x) 993 #define ecb_decltype(x) __typeof__ (x)
683#endif 994#endif
684 995
996#if _MSC_VER >= 1300
997 #define ecb_deprecated __declspec (deprecated)
998#else
999 #define ecb_deprecated ecb_attribute ((__deprecated__))
1000#endif
1001
1002#if _MSC_VER >= 1500
1003 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
1004#elif ECB_GCC_VERSION(4,5)
1005 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
1006#else
1007 #define ecb_deprecated_message(msg) ecb_deprecated
1008#endif
1009
1010#if _MSC_VER >= 1400
1011 #define ecb_noinline __declspec (noinline)
1012#else
685#define ecb_noinline ecb_attribute ((__noinline__)) 1013 #define ecb_noinline ecb_attribute ((__noinline__))
686#define ecb_noreturn ecb_attribute ((__noreturn__)) 1014#endif
1015
687#define ecb_unused ecb_attribute ((__unused__)) 1016#define ecb_unused ecb_attribute ((__unused__))
688#define ecb_const ecb_attribute ((__const__)) 1017#define ecb_const ecb_attribute ((__const__))
689#define ecb_pure ecb_attribute ((__pure__)) 1018#define ecb_pure ecb_attribute ((__pure__))
1019
1020#if ECB_C11 || __IBMC_NORETURN
1021 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
1022 #define ecb_noreturn _Noreturn
1023#elif ECB_CPP11
1024 #define ecb_noreturn [[noreturn]]
1025#elif _MSC_VER >= 1200
1026 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
1027 #define ecb_noreturn __declspec (noreturn)
1028#else
1029 #define ecb_noreturn ecb_attribute ((__noreturn__))
1030#endif
690 1031
691#if ECB_GCC_VERSION(4,3) 1032#if ECB_GCC_VERSION(4,3)
692 #define ecb_artificial ecb_attribute ((__artificial__)) 1033 #define ecb_artificial ecb_attribute ((__artificial__))
693 #define ecb_hot ecb_attribute ((__hot__)) 1034 #define ecb_hot ecb_attribute ((__hot__))
694 #define ecb_cold ecb_attribute ((__cold__)) 1035 #define ecb_cold ecb_attribute ((__cold__))
… …
706/* for compatibility to the rest of the world */ 1047/* for compatibility to the rest of the world */
707#define ecb_likely(expr) ecb_expect_true (expr) 1048#define ecb_likely(expr) ecb_expect_true (expr)
708#define ecb_unlikely(expr) ecb_expect_false (expr) 1049#define ecb_unlikely(expr) ecb_expect_false (expr)
709 1050
710/* count trailing zero bits and count # of one bits */ 1051/* count trailing zero bits and count # of one bits */
711#if ECB_GCC_VERSION(3,4) 1052#if ECB_GCC_VERSION(3,4) \
1053 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
1054 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
1055 && ECB_CLANG_BUILTIN(__builtin_popcount))
712 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 1056 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
713 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 1057 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
714 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 1058 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
715 #define ecb_ctz32(x) __builtin_ctz (x) 1059 #define ecb_ctz32(x) __builtin_ctz (x)
716 #define ecb_ctz64(x) __builtin_ctzll (x) 1060 #define ecb_ctz64(x) __builtin_ctzll (x)
717 #define ecb_popcount32(x) __builtin_popcount (x) 1061 #define ecb_popcount32(x) __builtin_popcount (x)
718 /* no popcountll */ 1062 /* no popcountll */
719#else 1063#else
720 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 1064 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
721 ecb_function_ int 1065 ecb_function_ ecb_const int
722 ecb_ctz32 (uint32_t x) 1066 ecb_ctz32 (uint32_t x)
723 { 1067 {
1068#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1069 unsigned long r;
1070 _BitScanForward (&r, x);
1071 return (int)r;
1072#else
724 int r = 0; 1073 int r = 0;
725 1074
726 x &= ~x + 1; /* this isolates the lowest bit */ 1075 x &= ~x + 1; /* this isolates the lowest bit */
727 1076
728#if ECB_branchless_on_i386 1077#if ECB_branchless_on_i386
… …
738 if (x & 0xff00ff00) r += 8; 1087 if (x & 0xff00ff00) r += 8;
739 if (x & 0xffff0000) r += 16; 1088 if (x & 0xffff0000) r += 16;
740#endif 1089#endif
741 1090
742 return r; 1091 return r;
1092#endif
743 } 1093 }
744 1094
745 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 1095 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
746 ecb_function_ int 1096 ecb_function_ ecb_const int
747 ecb_ctz64 (uint64_t x) 1097 ecb_ctz64 (uint64_t x)
748 { 1098 {
1099#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1100 unsigned long r;
1101 _BitScanForward64 (&r, x);
1102 return (int)r;
1103#else
749 int shift = x & 0xffffffffU ? 0 : 32; 1104 int shift = x & 0xffffffff ? 0 : 32;
750 return ecb_ctz32 (x >> shift) + shift; 1105 return ecb_ctz32 (x >> shift) + shift;
1106#endif
751 } 1107 }
752 1108
753 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 1109 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
754 ecb_function_ int 1110 ecb_function_ ecb_const int
755 ecb_popcount32 (uint32_t x) 1111 ecb_popcount32 (uint32_t x)
756 { 1112 {
757 x -= (x >> 1) & 0x55555555; 1113 x -= (x >> 1) & 0x55555555;
758 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 1114 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
759 x = ((x >> 4) + x) & 0x0f0f0f0f; 1115 x = ((x >> 4) + x) & 0x0f0f0f0f;
760 x *= 0x01010101; 1116 x *= 0x01010101;
761 1117
762 return x >> 24; 1118 return x >> 24;
763 } 1119 }
764 1120
765 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 1121 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
766 ecb_function_ int ecb_ld32 (uint32_t x) 1122 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
767 { 1123 {
1124#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
1125 unsigned long r;
1126 _BitScanReverse (&r, x);
1127 return (int)r;
1128#else
768 int r = 0; 1129 int r = 0;
769 1130
770 if (x >> 16) { x >>= 16; r += 16; } 1131 if (x >> 16) { x >>= 16; r += 16; }
771 if (x >> 8) { x >>= 8; r += 8; } 1132 if (x >> 8) { x >>= 8; r += 8; }
772 if (x >> 4) { x >>= 4; r += 4; } 1133 if (x >> 4) { x >>= 4; r += 4; }
773 if (x >> 2) { x >>= 2; r += 2; } 1134 if (x >> 2) { x >>= 2; r += 2; }
774 if (x >> 1) { r += 1; } 1135 if (x >> 1) { r += 1; }
775 1136
776 return r; 1137 return r;
1138#endif
777 } 1139 }
778 1140
779 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1141 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
780 ecb_function_ int ecb_ld64 (uint64_t x) 1142 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
781 { 1143 {
1144#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1145 unsigned long r;
1146 _BitScanReverse64 (&r, x);
1147 return (int)r;
1148#else
782 int r = 0; 1149 int r = 0;
783 1150
784 if (x >> 32) { x >>= 32; r += 32; } 1151 if (x >> 32) { x >>= 32; r += 32; }
785 1152
786 return r + ecb_ld32 (x); 1153 return r + ecb_ld32 (x);
1154#endif
787 } 1155 }
788#endif 1156#endif
789 1157
1158ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1159ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1160ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1161ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1162
790ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; 1163ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) 1164ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
792{ 1165{
793 return ( (x * 0x0802U & 0x22110U) 1166 return ( (x * 0x0802U & 0x22110U)
794 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; 1167 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
795} 1168}
796 1169
797ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; 1170ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) 1171ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
799{ 1172{
800 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); 1173 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
801 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); 1174 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
802 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); 1175 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
803 x = ( x >> 8 ) | ( x << 8); 1176 x = ( x >> 8 ) | ( x << 8);
804 1177
805 return x; 1178 return x;
806} 1179}
807 1180
808ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; 1181ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) 1182ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
810{ 1183{
811 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); 1184 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
812 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); 1185 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
813 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); 1186 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
814 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); 1187 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
… …
817 return x; 1190 return x;
818} 1191}
819 1192
820/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1193/* popcount64 is only available on 64 bit cpus as gcc builtin */
821/* so for this version we are lazy */ 1194/* so for this version we are lazy */
822ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1195ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
823ecb_function_ int 1196ecb_function_ ecb_const int
824ecb_popcount64 (uint64_t x) 1197ecb_popcount64 (uint64_t x)
825{ 1198{
826 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1199 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
827} 1200}
828 1201
829ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1202ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
830ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1203ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
831ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1204ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
832ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1205ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
833ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1206ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
834ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1207ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
835ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1208ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
836ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1209ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
837 1210
838ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1211ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
839ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1212ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
840ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1213ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
841ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1214ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
842ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1215ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
843ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1216ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
844ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1217ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
845ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1218ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
846 1219
847#if ECB_GCC_VERSION(4,3) 1220#if ECB_CPP
1221
1222inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); }
1223inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); }
1224inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); }
1225inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); }
1226
1227inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); }
1228inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); }
1229inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); }
1230inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); }
1231
1232inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); }
1233inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); }
1234inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); }
1235inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); }
1236
1237inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); }
1238inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); }
1239inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); }
1240inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); }
1241
1242inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); }
1243inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); }
1244inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); }
1245
1246inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); }
1247inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); }
1248inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); }
1249inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); }
1250
1251inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); }
1252inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); }
1253inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); }
1254inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); }
1255
1256#endif
1257
1258#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1259 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1260 #define ecb_bswap16(x) __builtin_bswap16 (x)
1261 #else
848 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1262 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1263 #endif
849 #define ecb_bswap32(x) __builtin_bswap32 (x) 1264 #define ecb_bswap32(x) __builtin_bswap32 (x)
850 #define ecb_bswap64(x) __builtin_bswap64 (x) 1265 #define ecb_bswap64(x) __builtin_bswap64 (x)
1266#elif _MSC_VER
1267 #include <stdlib.h>
1268 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1269 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1270 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
851#else 1271#else
852 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1272 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
853 ecb_function_ uint16_t 1273 ecb_function_ ecb_const uint16_t
854 ecb_bswap16 (uint16_t x) 1274 ecb_bswap16 (uint16_t x)
855 { 1275 {
856 return ecb_rotl16 (x, 8); 1276 return ecb_rotl16 (x, 8);
857 } 1277 }
858 1278
859 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1279 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
860 ecb_function_ uint32_t 1280 ecb_function_ ecb_const uint32_t
861 ecb_bswap32 (uint32_t x) 1281 ecb_bswap32 (uint32_t x)
862 { 1282 {
863 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1283 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
864 } 1284 }
865 1285
866 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1286 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
867 ecb_function_ uint64_t 1287 ecb_function_ ecb_const uint64_t
868 ecb_bswap64 (uint64_t x) 1288 ecb_bswap64 (uint64_t x)
869 { 1289 {
870 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1290 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
871 } 1291 }
872#endif 1292#endif
873 1293
874#if ECB_GCC_VERSION(4,5) 1294#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
875 #define ecb_unreachable() __builtin_unreachable () 1295 #define ecb_unreachable() __builtin_unreachable ()
876#else 1296#else
877 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1297 /* this seems to work fine, but gcc always emits a warning for it :/ */
878 ecb_inline void ecb_unreachable (void) ecb_noreturn; 1298 ecb_inline ecb_noreturn void ecb_unreachable (void);
879 ecb_inline void ecb_unreachable (void) { } 1299 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
880#endif 1300#endif
881 1301
882/* try to tell the compiler that some condition is definitely true */ 1302/* try to tell the compiler that some condition is definitely true */
883#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1303#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
884 1304
885ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; 1305ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
886ecb_inline unsigned char 1306ecb_inline ecb_const uint32_t
887ecb_byteorder_helper (void) 1307ecb_byteorder_helper (void)
888{ 1308{
889 const uint32_t u = 0x11223344; 1309 /* the union code still generates code under pressure in gcc, */
890 return *(unsigned char *)&u; 1310 /* but less than using pointers, and always seems to */
1311 /* successfully return a constant. */
1312 /* the reason why we have this horrible preprocessor mess */
1313 /* is to avoid it in all cases, at least on common architectures */
1314 /* or when using a recent enough gcc version (>= 4.6) */
1315#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1316 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1317 #define ECB_LITTLE_ENDIAN 1
1318 return 0x44332211;
1319#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1320 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1321 #define ECB_BIG_ENDIAN 1
1322 return 0x11223344;
1323#else
1324 union
1325 {
1326 uint8_t c[4];
1327 uint32_t u;
1328 } u = { 0x11, 0x22, 0x33, 0x44 };
1329 return u.u;
1330#endif
891} 1331}
892 1332
893ecb_inline ecb_bool ecb_big_endian (void) ecb_const; 1333ecb_inline ecb_const ecb_bool ecb_big_endian (void);
894ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1334ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
895ecb_inline ecb_bool ecb_little_endian (void) ecb_const; 1335ecb_inline ecb_const ecb_bool ecb_little_endian (void);
896ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1336ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
1337
1338/*****************************************************************************/
1339/* unaligned load/store */
1340
1341ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1342ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1343ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1344
1345ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1346ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1347ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1348
1349ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1350ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1351ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; }
1352
1353ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); }
1354ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); }
1355ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); }
1356
1357ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); }
1358ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); }
1359ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); }
1360
1361ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; }
1362ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; }
1363ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; }
1364
1365ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; }
1366ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; }
1367ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; }
1368
1369ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); }
1370ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); }
1371ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); }
1372
1373ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); }
1374ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); }
1375ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); }
1376
1377ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); }
1378ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); }
1379ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); }
1380
1381#if ECB_CPP
1382
1383inline uint8_t ecb_bswap (uint8_t v) { return v; }
1384inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); }
1385inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); }
1386inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); }
1387
1388template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1389template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1390template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; }
1391template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); }
1392template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); }
1393template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; }
1394template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); }
1395template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); }
1396
1397template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; }
1398template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; }
1399template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; }
1400template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); }
1401template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); }
1402template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); }
1403template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); }
1404template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); }
1405
1406#endif
1407
1408/*****************************************************************************/
897 1409
898#if ECB_GCC_VERSION(3,0) || ECB_C99 1410#if ECB_GCC_VERSION(3,0) || ECB_C99
899 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1411 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
900#else 1412#else
901 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1413 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
902#endif 1414#endif
903 1415
904#if __cplusplus 1416#if ECB_CPP
905 template<typename T> 1417 template<typename T>
906 static inline T ecb_div_rd (T val, T div) 1418 static inline T ecb_div_rd (T val, T div)
907 { 1419 {
908 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1420 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
909 } 1421 }
… …
926 } 1438 }
927#else 1439#else
928 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1440 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
929#endif 1441#endif
930 1442
1443/*****************************************************************************/
1444
1445ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1446ecb_function_ ecb_const uint32_t
1447ecb_binary16_to_binary32 (uint32_t x)
1448{
1449 unsigned int s = (x & 0x8000) << (31 - 15);
1450 int e = (x >> 10) & 0x001f;
1451 unsigned int m = x & 0x03ff;
1452
1453 if (ecb_expect_false (e == 31))
1454 /* infinity or NaN */
1455 e = 255 - (127 - 15);
1456 else if (ecb_expect_false (!e))
1457 {
1458 if (ecb_expect_true (!m))
1459 /* zero, handled by code below by forcing e to 0 */
1460 e = 0 - (127 - 15);
1461 else
1462 {
1463 /* subnormal, renormalise */
1464 unsigned int s = 10 - ecb_ld32 (m);
1465
1466 m = (m << s) & 0x3ff; /* mask implicit bit */
1467 e -= s - 1;
1468 }
1469 }
1470
1471 /* e and m now are normalised, or zero, (or inf or nan) */
1472 e += 127 - 15;
1473
1474 return s | (e << 23) | (m << (23 - 10));
1475}
1476
1477ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1478ecb_function_ ecb_const uint16_t
1479ecb_binary32_to_binary16 (uint32_t x)
1480{
1481 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1482 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1483 unsigned int m = x & 0x007fffff;
1484
1485 x &= 0x7fffffff;
1486
1487 /* if it's within range of binary16 normals, use fast path */
1488 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1489 {
1490 /* mantissa round-to-even */
1491 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1492
1493 /* handle overflow */
1494 if (ecb_expect_false (m >= 0x00800000))
1495 {
1496 m >>= 1;
1497 e += 1;
1498 }
1499
1500 return s | (e << 10) | (m >> (23 - 10));
1501 }
1502
1503 /* handle large numbers and infinity */
1504 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1505 return s | 0x7c00;
1506
1507 /* handle zero, subnormals and small numbers */
1508 if (ecb_expect_true (x < 0x38800000))
1509 {
1510 /* zero */
1511 if (ecb_expect_true (!x))
1512 return s;
1513
1514 /* handle subnormals */
1515
1516 /* too small, will be zero */
1517 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1518 return s;
1519
1520 m |= 0x00800000; /* make implicit bit explicit */
1521
1522 /* very tricky - we need to round to the nearest e (+10) bit value */
1523 {
1524 unsigned int bits = 14 - e;
1525 unsigned int half = (1 << (bits - 1)) - 1;
1526 unsigned int even = (m >> bits) & 1;
1527
1528 /* if this overflows, we will end up with a normalised number */
1529 m = (m + half + even) >> bits;
1530 }
1531
1532 return s | m;
1533 }
1534
1535 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1536 m >>= 13;
1537
1538 return s | 0x7c00 | m | !m;
1539}
1540
1541/*******************************************************************************/
1542/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1543
1544/* basically, everything uses "ieee pure-endian" floating point numbers */
1545/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1546#if 0 \
1547 || __i386 || __i386__ \
1548 || ECB_GCC_AMD64 \
1549 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1550 || defined __s390__ || defined __s390x__ \
1551 || defined __mips__ \
1552 || defined __alpha__ \
1553 || defined __hppa__ \
1554 || defined __ia64__ \
1555 || defined __m68k__ \
1556 || defined __m88k__ \
1557 || defined __sh__ \
1558 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1559 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1560 || defined __aarch64__
1561 #define ECB_STDFP 1
1562#else
1563 #define ECB_STDFP 0
1564#endif
1565
1566#ifndef ECB_NO_LIBM
1567
1568 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1569
1570 /* only the oldest of old doesn't have this one. solaris. */
1571 #ifdef INFINITY
1572 #define ECB_INFINITY INFINITY
1573 #else
1574 #define ECB_INFINITY HUGE_VAL
1575 #endif
1576
1577 #ifdef NAN
1578 #define ECB_NAN NAN
1579 #else
1580 #define ECB_NAN ECB_INFINITY
1581 #endif
1582
1583 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1584 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1585 #define ecb_frexpf(x,e) frexpf ((x), (e))
1586 #else
1587 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1588 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1589 #endif
1590
1591 /* convert a float to ieee single/binary32 */
1592 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1593 ecb_function_ ecb_const uint32_t
1594 ecb_float_to_binary32 (float x)
1595 {
1596 uint32_t r;
1597
1598 #if ECB_STDFP
1599 memcpy (&r, &x, 4);
1600 #else
1601 /* slow emulation, works for anything but -0 */
1602 uint32_t m;
1603 int e;
1604
1605 if (x == 0e0f ) return 0x00000000U;
1606 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1607 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1608 if (x != x ) return 0x7fbfffffU;
1609
1610 m = ecb_frexpf (x, &e) * 0x1000000U;
1611
1612 r = m & 0x80000000U;
1613
1614 if (r)
1615 m = -m;
1616
1617 if (e <= -126)
1618 {
1619 m &= 0xffffffU;
1620 m >>= (-125 - e);
1621 e = -126;
1622 }
1623
1624 r |= (e + 126) << 23;
1625 r |= m & 0x7fffffU;
1626 #endif
1627
1628 return r;
1629 }
1630
1631 /* converts an ieee single/binary32 to a float */
1632 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1633 ecb_function_ ecb_const float
1634 ecb_binary32_to_float (uint32_t x)
1635 {
1636 float r;
1637
1638 #if ECB_STDFP
1639 memcpy (&r, &x, 4);
1640 #else
1641 /* emulation, only works for normals and subnormals and +0 */
1642 int neg = x >> 31;
1643 int e = (x >> 23) & 0xffU;
1644
1645 x &= 0x7fffffU;
1646
1647 if (e)
1648 x |= 0x800000U;
1649 else
1650 e = 1;
1651
1652 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1653 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1654
1655 r = neg ? -r : r;
1656 #endif
1657
1658 return r;
1659 }
1660
1661 /* convert a double to ieee double/binary64 */
1662 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1663 ecb_function_ ecb_const uint64_t
1664 ecb_double_to_binary64 (double x)
1665 {
1666 uint64_t r;
1667
1668 #if ECB_STDFP
1669 memcpy (&r, &x, 8);
1670 #else
1671 /* slow emulation, works for anything but -0 */
1672 uint64_t m;
1673 int e;
1674
1675 if (x == 0e0 ) return 0x0000000000000000U;
1676 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1677 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1678 if (x != x ) return 0X7ff7ffffffffffffU;
1679
1680 m = frexp (x, &e) * 0x20000000000000U;
1681
1682 r = m & 0x8000000000000000;;
1683
1684 if (r)
1685 m = -m;
1686
1687 if (e <= -1022)
1688 {
1689 m &= 0x1fffffffffffffU;
1690 m >>= (-1021 - e);
1691 e = -1022;
1692 }
1693
1694 r |= ((uint64_t)(e + 1022)) << 52;
1695 r |= m & 0xfffffffffffffU;
1696 #endif
1697
1698 return r;
1699 }
1700
1701 /* converts an ieee double/binary64 to a double */
1702 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1703 ecb_function_ ecb_const double
1704 ecb_binary64_to_double (uint64_t x)
1705 {
1706 double r;
1707
1708 #if ECB_STDFP
1709 memcpy (&r, &x, 8);
1710 #else
1711 /* emulation, only works for normals and subnormals and +0 */
1712 int neg = x >> 63;
1713 int e = (x >> 52) & 0x7ffU;
1714
1715 x &= 0xfffffffffffffU;
1716
1717 if (e)
1718 x |= 0x10000000000000U;
1719 else
1720 e = 1;
1721
1722 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1723 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1724
1725 r = neg ? -r : r;
1726 #endif
1727
1728 return r;
1729 }
1730
1731 /* convert a float to ieee half/binary16 */
1732 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1733 ecb_function_ ecb_const uint16_t
1734 ecb_float_to_binary16 (float x)
1735 {
1736 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1737 }
1738
1739 /* convert an ieee half/binary16 to float */
1740 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1741 ecb_function_ ecb_const float
1742 ecb_binary16_to_float (uint16_t x)
1743 {
1744 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1745 }
1746
1747#endif
1748
931#endif 1749#endif
932 1750
933/* ECB.H END */ 1751/* ECB.H END */
934 1752
935#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1753#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
936/* if your architecture doesn't need memory fences, e.g. because it is 1754/* if your architecture doesn't need memory fences, e.g. because it is
937 * single-cpu/core, or if you use libev in a project that doesn't use libev 1755 * single-cpu/core, or if you use libev in a project that doesn't use libev
938 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1756 * from multiple threads, then you can define ECB_NO_THREADS when compiling
939 * libev, in which cases the memory fences become nops. 1757 * libev, in which cases the memory fences become nops.
940 * alternatively, you can remove this #error and link against libpthread, 1758 * alternatively, you can remove this #error and link against libpthread,
941 * which will then provide the memory fences. 1759 * which will then provide the memory fences.
942 */ 1760 */
943# error "memory fences not defined for your architecture, please report" 1761# error "memory fences not defined for your architecture, please report"
… …
947# define ECB_MEMORY_FENCE do { } while (0) 1765# define ECB_MEMORY_FENCE do { } while (0)
948# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 1766# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 1767# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
950#endif 1768#endif
951 1769
952#define expect_false(cond) ecb_expect_false (cond)
953#define expect_true(cond) ecb_expect_true (cond)
954#define noinline ecb_noinline
955
956#define inline_size ecb_inline 1770#define inline_size ecb_inline
957 1771
958#if EV_FEATURE_CODE 1772#if EV_FEATURE_CODE
959# define inline_speed ecb_inline 1773# define inline_speed ecb_inline
960#else 1774#else
961# define inline_speed static noinline 1775# define inline_speed ecb_noinline static
962#endif 1776#endif
1777
1778/*****************************************************************************/
1779/* raw syscall wrappers */
1780
1781#if EV_NEED_SYSCALL
1782
1783#include <sys/syscall.h>
1784
1785/*
1786 * define some syscall wrappers for common architectures
1787 * this is mostly for nice looks during debugging, not performance.
1788 * our syscalls return < 0, not == -1, on error. which is good
1789 * enough for linux aio.
1790 * TODO: arm is also common nowadays, maybe even mips and x86
1791 * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove...
1792 */
1793#if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE
1794 /* the costly errno access probably kills this for size optimisation */
1795
1796 #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \
1797 ({ \
1798 long res; \
1799 register unsigned long r6 __asm__ ("r9" ); \
1800 register unsigned long r5 __asm__ ("r8" ); \
1801 register unsigned long r4 __asm__ ("r10"); \
1802 register unsigned long r3 __asm__ ("rdx"); \
1803 register unsigned long r2 __asm__ ("rsi"); \
1804 register unsigned long r1 __asm__ ("rdi"); \
1805 if (narg >= 6) r6 = (unsigned long)(arg6); \
1806 if (narg >= 5) r5 = (unsigned long)(arg5); \
1807 if (narg >= 4) r4 = (unsigned long)(arg4); \
1808 if (narg >= 3) r3 = (unsigned long)(arg3); \
1809 if (narg >= 2) r2 = (unsigned long)(arg2); \
1810 if (narg >= 1) r1 = (unsigned long)(arg1); \
1811 __asm__ __volatile__ ( \
1812 "syscall\n\t" \
1813 : "=a" (res) \
1814 : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \
1815 : "cc", "r11", "cx", "memory"); \
1816 errno = -res; \
1817 res; \
1818 })
1819
1820#endif
1821
1822#ifdef ev_syscall
1823 #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0)
1824 #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0)
1825 #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0)
1826 #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0)
1827 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0)
1828 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0)
1829 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6)
1830#else
1831 #define ev_syscall0(nr) syscall (nr)
1832 #define ev_syscall1(nr,arg1) syscall (nr, arg1)
1833 #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2)
1834 #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3)
1835 #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4)
1836 #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5)
1837 #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6)
1838#endif
1839
1840#endif
1841
1842/*****************************************************************************/
963 1843
964#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1844#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
965 1845
966#if EV_MINPRI == EV_MAXPRI 1846#if EV_MINPRI == EV_MAXPRI
967# define ABSPRI(w) (((W)w), 0) 1847# define ABSPRI(w) (((W)w), 0)
968#else 1848#else
969# define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1849# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
970#endif 1850#endif
971 1851
972#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1852#define EMPTY /* required for microsofts broken pseudo-c compiler */
973#define EMPTY2(a,b) /* used to suppress some warnings */
974 1853
975typedef ev_watcher *W; 1854typedef ev_watcher *W;
976typedef ev_watcher_list *WL; 1855typedef ev_watcher_list *WL;
977typedef ev_watcher_time *WT; 1856typedef ev_watcher_time *WT;
978 1857
… …
1003# include "ev_win32.c" 1882# include "ev_win32.c"
1004#endif 1883#endif
1005 1884
1006/*****************************************************************************/ 1885/*****************************************************************************/
1007 1886
1887#if EV_USE_LINUXAIO
1888# include <linux/aio_abi.h> /* probably only needed for aio_context_t */
1889#endif
1890
1008/* define a suitable floor function (only used by periodics atm) */ 1891/* define a suitable floor function (only used by periodics atm) */
1009 1892
1010#if EV_USE_FLOOR 1893#if EV_USE_FLOOR
1011# include <math.h> 1894# include <math.h>
1012# define ev_floor(v) floor (v) 1895# define ev_floor(v) floor (v)
1013#else 1896#else
1014 1897
1015#include <float.h> 1898#include <float.h>
1016 1899
1017/* a floor() replacement function, should be independent of ev_tstamp type */ 1900/* a floor() replacement function, should be independent of ev_tstamp type */
1901ecb_noinline
1018static ev_tstamp noinline 1902static ev_tstamp
1019ev_floor (ev_tstamp v) 1903ev_floor (ev_tstamp v)
1020{ 1904{
1021 /* the choice of shift factor is not terribly important */ 1905 /* the choice of shift factor is not terribly important */
1022#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1906#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1907 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1024#else 1908#else
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; 1909 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1026#endif 1910#endif
1027 1911
1912 /* special treatment for negative arguments */
1913 if (ecb_expect_false (v < 0.))
1914 {
1915 ev_tstamp f = -ev_floor (-v);
1916
1917 return f - (f == v ? 0 : 1);
1918 }
1919
1028 /* argument too large for an unsigned long? */ 1920 /* argument too large for an unsigned long? then reduce it */
1029 if (expect_false (v >= shift)) 1921 if (ecb_expect_false (v >= shift))
1030 { 1922 {
1031 ev_tstamp f; 1923 ev_tstamp f;
1032 1924
1033 if (v == v - 1.) 1925 if (v == v - 1.)
1034 return v; /* very large number */ 1926 return v; /* very large numbers are assumed to be integer */
1035 1927
1036 f = shift * ev_floor (v * (1. / shift)); 1928 f = shift * ev_floor (v * (1. / shift));
1037 return f + ev_floor (v - f); 1929 return f + ev_floor (v - f);
1038 } 1930 }
1039 1931
1040 /* special treatment for negative args? */
1041 if (expect_false (v < 0.))
1042 {
1043 ev_tstamp f = -ev_floor (-v);
1044
1045 return f - (f == v ? 0 : 1);
1046 }
1047
1048 /* fits into an unsigned long */ 1932 /* fits into an unsigned long */
1049 return (unsigned long)v; 1933 return (unsigned long)v;
1050} 1934}
1051 1935
1052#endif 1936#endif
… …
1055 1939
1056#ifdef __linux 1940#ifdef __linux
1057# include <sys/utsname.h> 1941# include <sys/utsname.h>
1058#endif 1942#endif
1059 1943
1060static unsigned int noinline ecb_cold 1944ecb_noinline ecb_cold
1945static unsigned int
1061ev_linux_version (void) 1946ev_linux_version (void)
1062{ 1947{
1063#ifdef __linux 1948#ifdef __linux
1064 unsigned int v = 0; 1949 unsigned int v = 0;
1065 struct utsname buf; 1950 struct utsname buf;
… …
1094} 1979}
1095 1980
1096/*****************************************************************************/ 1981/*****************************************************************************/
1097 1982
1098#if EV_AVOID_STDIO 1983#if EV_AVOID_STDIO
1099static void noinline ecb_cold 1984ecb_noinline ecb_cold
1985static void
1100ev_printerr (const char *msg) 1986ev_printerr (const char *msg)
1101{ 1987{
1102 write (STDERR_FILENO, msg, strlen (msg)); 1988 write (STDERR_FILENO, msg, strlen (msg));
1103} 1989}
1104#endif 1990#endif
1105 1991
1106static void (*syserr_cb)(const char *msg); 1992static void (*syserr_cb)(const char *msg) EV_NOEXCEPT;
1107 1993
1108void ecb_cold 1994ecb_cold
1995void
1109ev_set_syserr_cb (void (*cb)(const char *msg)) 1996ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT
1110{ 1997{
1111 syserr_cb = cb; 1998 syserr_cb = cb;
1112} 1999}
1113 2000
1114static void noinline ecb_cold 2001ecb_noinline ecb_cold
2002static void
1115ev_syserr (const char *msg) 2003ev_syserr (const char *msg)
1116{ 2004{
1117 if (!msg) 2005 if (!msg)
1118 msg = "(libev) system error"; 2006 msg = "(libev) system error";
1119 2007
… …
1132 abort (); 2020 abort ();
1133 } 2021 }
1134} 2022}
1135 2023
1136static void * 2024static void *
1137ev_realloc_emul (void *ptr, long size) 2025ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT
1138{ 2026{
1139#if __GLIBC__
1140 return realloc (ptr, size);
1141#else
1142 /* some systems, notably openbsd and darwin, fail to properly 2027 /* some systems, notably openbsd and darwin, fail to properly
1143 * implement realloc (x, 0) (as required by both ansi c-89 and 2028 * implement realloc (x, 0) (as required by both ansi c-89 and
1144 * the single unix specification, so work around them here. 2029 * the single unix specification, so work around them here.
2030 * recently, also (at least) fedora and debian started breaking it,
2031 * despite documenting it otherwise.
1145 */ 2032 */
1146 2033
1147 if (size) 2034 if (size)
1148 return realloc (ptr, size); 2035 return realloc (ptr, size);
1149 2036
1150 free (ptr); 2037 free (ptr);
1151 return 0; 2038 return 0;
1152#endif
1153} 2039}
1154 2040
1155static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 2041static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul;
1156 2042
1157void ecb_cold 2043ecb_cold
2044void
1158ev_set_allocator (void *(*cb)(void *ptr, long size)) 2045ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT
1159{ 2046{
1160 alloc = cb; 2047 alloc = cb;
1161} 2048}
1162 2049
1163inline_speed void * 2050inline_speed void *
… …
1190typedef struct 2077typedef struct
1191{ 2078{
1192 WL head; 2079 WL head;
1193 unsigned char events; /* the events watched for */ 2080 unsigned char events; /* the events watched for */
1194 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ 2081 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1195 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 2082 unsigned char emask; /* some backends store the actual kernel mask in here */
1196 unsigned char unused; 2083 unsigned char eflags; /* flags field for use by backends */
1197#if EV_USE_EPOLL 2084#if EV_USE_EPOLL
1198 unsigned int egen; /* generation counter to counter epoll bugs */ 2085 unsigned int egen; /* generation counter to counter epoll bugs */
1199#endif 2086#endif
1200#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2087#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1201 SOCKET handle; 2088 SOCKET handle;
… …
1255 static struct ev_loop default_loop_struct; 2142 static struct ev_loop default_loop_struct;
1256 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ 2143 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1257 2144
1258#else 2145#else
1259 2146
1260 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ 2147 EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */
1261 #define VAR(name,decl) static decl; 2148 #define VAR(name,decl) static decl;
1262 #include "ev_vars.h" 2149 #include "ev_vars.h"
1263 #undef VAR 2150 #undef VAR
1264 2151
1265 static int ev_default_loop_ptr; 2152 static int ev_default_loop_ptr;
1266 2153
1267#endif 2154#endif
1268 2155
1269#if EV_FEATURE_API 2156#if EV_FEATURE_API
1270# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 2157# define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A)
1271# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 2158# define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A)
1272# define EV_INVOKE_PENDING invoke_cb (EV_A) 2159# define EV_INVOKE_PENDING invoke_cb (EV_A)
1273#else 2160#else
1274# define EV_RELEASE_CB (void)0 2161# define EV_RELEASE_CB (void)0
1275# define EV_ACQUIRE_CB (void)0 2162# define EV_ACQUIRE_CB (void)0
1276# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 2163# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
… …
1280 2167
1281/*****************************************************************************/ 2168/*****************************************************************************/
1282 2169
1283#ifndef EV_HAVE_EV_TIME 2170#ifndef EV_HAVE_EV_TIME
1284ev_tstamp 2171ev_tstamp
1285ev_time (void) 2172ev_time (void) EV_NOEXCEPT
1286{ 2173{
1287#if EV_USE_REALTIME 2174#if EV_USE_REALTIME
1288 if (expect_true (have_realtime)) 2175 if (ecb_expect_true (have_realtime))
1289 { 2176 {
1290 struct timespec ts; 2177 struct timespec ts;
1291 clock_gettime (CLOCK_REALTIME, &ts); 2178 clock_gettime (CLOCK_REALTIME, &ts);
1292 return ts.tv_sec + ts.tv_nsec * 1e-9; 2179 return EV_TS_GET (ts);
1293 } 2180 }
1294#endif 2181#endif
1295 2182
2183 {
1296 struct timeval tv; 2184 struct timeval tv;
1297 gettimeofday (&tv, 0); 2185 gettimeofday (&tv, 0);
1298 return tv.tv_sec + tv.tv_usec * 1e-6; 2186 return EV_TV_GET (tv);
2187 }
1299} 2188}
1300#endif 2189#endif
1301 2190
1302inline_size ev_tstamp 2191inline_size ev_tstamp
1303get_clock (void) 2192get_clock (void)
1304{ 2193{
1305#if EV_USE_MONOTONIC 2194#if EV_USE_MONOTONIC
1306 if (expect_true (have_monotonic)) 2195 if (ecb_expect_true (have_monotonic))
1307 { 2196 {
1308 struct timespec ts; 2197 struct timespec ts;
1309 clock_gettime (CLOCK_MONOTONIC, &ts); 2198 clock_gettime (CLOCK_MONOTONIC, &ts);
1310 return ts.tv_sec + ts.tv_nsec * 1e-9; 2199 return EV_TS_GET (ts);
1311 } 2200 }
1312#endif 2201#endif
1313 2202
1314 return ev_time (); 2203 return ev_time ();
1315} 2204}
1316 2205
1317#if EV_MULTIPLICITY 2206#if EV_MULTIPLICITY
1318ev_tstamp 2207ev_tstamp
1319ev_now (EV_P) 2208ev_now (EV_P) EV_NOEXCEPT
1320{ 2209{
1321 return ev_rt_now; 2210 return ev_rt_now;
1322} 2211}
1323#endif 2212#endif
1324 2213
1325void 2214void
1326ev_sleep (ev_tstamp delay) 2215ev_sleep (ev_tstamp delay) EV_NOEXCEPT
1327{ 2216{
1328 if (delay > 0.) 2217 if (delay > EV_TS_CONST (0.))
1329 { 2218 {
1330#if EV_USE_NANOSLEEP 2219#if EV_USE_NANOSLEEP
1331 struct timespec ts; 2220 struct timespec ts;
1332 2221
1333 EV_TS_SET (ts, delay); 2222 EV_TS_SET (ts, delay);
1334 nanosleep (&ts, 0); 2223 nanosleep (&ts, 0);
1335#elif defined(_WIN32) 2224#elif defined _WIN32
2225 /* maybe this should round up, as ms is very low resolution */
2226 /* compared to select (µs) or nanosleep (ns) */
1336 Sleep ((unsigned long)(delay * 1e3)); 2227 Sleep ((unsigned long)(EV_TS_TO_MSEC (delay)));
1337#else 2228#else
1338 struct timeval tv; 2229 struct timeval tv;
1339 2230
1340 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 2231 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
1341 /* something not guaranteed by newer posix versions, but guaranteed */ 2232 /* something not guaranteed by newer posix versions, but guaranteed */
… …
1371 } 2262 }
1372 2263
1373 return ncur; 2264 return ncur;
1374} 2265}
1375 2266
1376static void * noinline ecb_cold 2267ecb_noinline ecb_cold
2268static void *
1377array_realloc (int elem, void *base, int *cur, int cnt) 2269array_realloc (int elem, void *base, int *cur, int cnt)
1378{ 2270{
1379 *cur = array_nextsize (elem, *cur, cnt); 2271 *cur = array_nextsize (elem, *cur, cnt);
1380 return ev_realloc (base, elem * *cur); 2272 return ev_realloc (base, elem * *cur);
1381} 2273}
1382 2274
2275#define array_needsize_noinit(base,offset,count)
2276
1383#define array_init_zero(base,count) \ 2277#define array_needsize_zerofill(base,offset,count) \
1384 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 2278 memset ((void *)(base + offset), 0, sizeof (*(base)) * (count))
1385 2279
1386#define array_needsize(type,base,cur,cnt,init) \ 2280#define array_needsize(type,base,cur,cnt,init) \
1387 if (expect_false ((cnt) > (cur))) \ 2281 if (ecb_expect_false ((cnt) > (cur))) \
1388 { \ 2282 { \
1389 int ecb_unused ocur_ = (cur); \ 2283 ecb_unused int ocur_ = (cur); \
1390 (base) = (type *)array_realloc \ 2284 (base) = (type *)array_realloc \
1391 (sizeof (type), (base), &(cur), (cnt)); \ 2285 (sizeof (type), (base), &(cur), (cnt)); \
1392 init ((base) + (ocur_), (cur) - ocur_); \ 2286 init ((base), ocur_, ((cur) - ocur_)); \
1393 } 2287 }
1394 2288
1395#if 0 2289#if 0
1396#define array_slim(type,stem) \ 2290#define array_slim(type,stem) \
1397 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 2291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
… …
1406 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 2300 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1407 2301
1408/*****************************************************************************/ 2302/*****************************************************************************/
1409 2303
1410/* dummy callback for pending events */ 2304/* dummy callback for pending events */
1411static void noinline 2305ecb_noinline
2306static void
1412pendingcb (EV_P_ ev_prepare *w, int revents) 2307pendingcb (EV_P_ ev_prepare *w, int revents)
1413{ 2308{
1414} 2309}
1415 2310
1416void noinline 2311ecb_noinline
2312void
1417ev_feed_event (EV_P_ void *w, int revents) 2313ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT
1418{ 2314{
1419 W w_ = (W)w; 2315 W w_ = (W)w;
1420 int pri = ABSPRI (w_); 2316 int pri = ABSPRI (w_);
1421 2317
1422 if (expect_false (w_->pending)) 2318 if (ecb_expect_false (w_->pending))
1423 pendings [pri][w_->pending - 1].events |= revents; 2319 pendings [pri][w_->pending - 1].events |= revents;
1424 else 2320 else
1425 { 2321 {
1426 w_->pending = ++pendingcnt [pri]; 2322 w_->pending = ++pendingcnt [pri];
1427 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2323 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit);
1428 pendings [pri][w_->pending - 1].w = w_; 2324 pendings [pri][w_->pending - 1].w = w_;
1429 pendings [pri][w_->pending - 1].events = revents; 2325 pendings [pri][w_->pending - 1].events = revents;
1430 } 2326 }
2327
2328 pendingpri = NUMPRI - 1;
1431} 2329}
1432 2330
1433inline_speed void 2331inline_speed void
1434feed_reverse (EV_P_ W w) 2332feed_reverse (EV_P_ W w)
1435{ 2333{
1436 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); 2334 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit);
1437 rfeeds [rfeedcnt++] = w; 2335 rfeeds [rfeedcnt++] = w;
1438} 2336}
1439 2337
1440inline_size void 2338inline_size void
1441feed_reverse_done (EV_P_ int revents) 2339feed_reverse_done (EV_P_ int revents)
… …
1476inline_speed void 2374inline_speed void
1477fd_event (EV_P_ int fd, int revents) 2375fd_event (EV_P_ int fd, int revents)
1478{ 2376{
1479 ANFD *anfd = anfds + fd; 2377 ANFD *anfd = anfds + fd;
1480 2378
1481 if (expect_true (!anfd->reify)) 2379 if (ecb_expect_true (!anfd->reify))
1482 fd_event_nocheck (EV_A_ fd, revents); 2380 fd_event_nocheck (EV_A_ fd, revents);
1483} 2381}
1484 2382
1485void 2383void
1486ev_feed_fd_event (EV_P_ int fd, int revents) 2384ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT
1487{ 2385{
1488 if (fd >= 0 && fd < anfdmax) 2386 if (fd >= 0 && fd < anfdmax)
1489 fd_event_nocheck (EV_A_ fd, revents); 2387 fd_event_nocheck (EV_A_ fd, revents);
1490} 2388}
1491 2389
… …
1494inline_size void 2392inline_size void
1495fd_reify (EV_P) 2393fd_reify (EV_P)
1496{ 2394{
1497 int i; 2395 int i;
1498 2396
2397 /* most backends do not modify the fdchanges list in backend_modfiy.
2398 * except io_uring, which has fixed-size buffers which might force us
2399 * to handle events in backend_modify, causing fdchangesd to be amended,
2400 * which could result in an endless loop.
2401 * to avoid this, we do not dynamically handle fds that were added
2402 * during fd_reify. that menas thast for those backends, fdchangecnt
2403 * might be non-zero during poll, which must cause them to not block.
2404 * to not put too much of a burden on other backends, this detail
2405 * needs to be handled in the backend.
2406 */
2407 int changecnt = fdchangecnt;
2408
1499#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP 2409#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1500 for (i = 0; i < fdchangecnt; ++i) 2410 for (i = 0; i < changecnt; ++i)
1501 { 2411 {
1502 int fd = fdchanges [i]; 2412 int fd = fdchanges [i];
1503 ANFD *anfd = anfds + fd; 2413 ANFD *anfd = anfds + fd;
1504 2414
1505 if (anfd->reify & EV__IOFDSET && anfd->head) 2415 if (anfd->reify & EV__IOFDSET && anfd->head)
… …
1519 } 2429 }
1520 } 2430 }
1521 } 2431 }
1522#endif 2432#endif
1523 2433
1524 for (i = 0; i < fdchangecnt; ++i) 2434 for (i = 0; i < changecnt; ++i)
1525 { 2435 {
1526 int fd = fdchanges [i]; 2436 int fd = fdchanges [i];
1527 ANFD *anfd = anfds + fd; 2437 ANFD *anfd = anfds + fd;
1528 ev_io *w; 2438 ev_io *w;
1529 2439
1530 unsigned char o_events = anfd->events; 2440 unsigned char o_events = anfd->events;
1531 unsigned char o_reify = anfd->reify; 2441 unsigned char o_reify = anfd->reify;
1532 2442
1533 anfd->reify = 0; 2443 anfd->reify = 0;
1534 2444
1535 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 2445 /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1536 { 2446 {
1537 anfd->events = 0; 2447 anfd->events = 0;
1538 2448
1539 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 2449 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1540 anfd->events |= (unsigned char)w->events; 2450 anfd->events |= (unsigned char)w->events;
… …
1545 2455
1546 if (o_reify & EV__IOFDSET) 2456 if (o_reify & EV__IOFDSET)
1547 backend_modify (EV_A_ fd, o_events, anfd->events); 2457 backend_modify (EV_A_ fd, o_events, anfd->events);
1548 } 2458 }
1549 2459
2460 /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added.
2461 * this is a rare case (see beginning comment in this function), so we copy them to the
2462 * front and hope the backend handles this case.
2463 */
2464 if (ecb_expect_false (fdchangecnt != changecnt))
2465 memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges));
2466
1550 fdchangecnt = 0; 2467 fdchangecnt -= changecnt;
1551} 2468}
1552 2469
1553/* something about the given fd changed */ 2470/* something about the given fd changed */
1554inline_size void 2471inline_size
2472void
1555fd_change (EV_P_ int fd, int flags) 2473fd_change (EV_P_ int fd, int flags)
1556{ 2474{
1557 unsigned char reify = anfds [fd].reify; 2475 unsigned char reify = anfds [fd].reify;
1558 anfds [fd].reify |= flags; 2476 anfds [fd].reify |= flags;
1559 2477
1560 if (expect_true (!reify)) 2478 if (ecb_expect_true (!reify))
1561 { 2479 {
1562 ++fdchangecnt; 2480 ++fdchangecnt;
1563 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 2481 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit);
1564 fdchanges [fdchangecnt - 1] = fd; 2482 fdchanges [fdchangecnt - 1] = fd;
1565 } 2483 }
1566} 2484}
1567 2485
1568/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2486/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1569inline_speed void ecb_cold 2487inline_speed ecb_cold void
1570fd_kill (EV_P_ int fd) 2488fd_kill (EV_P_ int fd)
1571{ 2489{
1572 ev_io *w; 2490 ev_io *w;
1573 2491
1574 while ((w = (ev_io *)anfds [fd].head)) 2492 while ((w = (ev_io *)anfds [fd].head))
… …
1577 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1578 } 2496 }
1579} 2497}
1580 2498
1581/* check whether the given fd is actually valid, for error recovery */ 2499/* check whether the given fd is actually valid, for error recovery */
1582inline_size int ecb_cold 2500inline_size ecb_cold int
1583fd_valid (int fd) 2501fd_valid (int fd)
1584{ 2502{
1585#ifdef _WIN32 2503#ifdef _WIN32
1586 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2504 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1587#else 2505#else
1588 return fcntl (fd, F_GETFD) != -1; 2506 return fcntl (fd, F_GETFD) != -1;
1589#endif 2507#endif
1590} 2508}
1591 2509
1592/* called on EBADF to verify fds */ 2510/* called on EBADF to verify fds */
1593static void noinline ecb_cold 2511ecb_noinline ecb_cold
2512static void
1594fd_ebadf (EV_P) 2513fd_ebadf (EV_P)
1595{ 2514{
1596 int fd; 2515 int fd;
1597 2516
1598 for (fd = 0; fd < anfdmax; ++fd) 2517 for (fd = 0; fd < anfdmax; ++fd)
… …
1600 if (!fd_valid (fd) && errno == EBADF) 2519 if (!fd_valid (fd) && errno == EBADF)
1601 fd_kill (EV_A_ fd); 2520 fd_kill (EV_A_ fd);
1602} 2521}
1603 2522
1604/* called on ENOMEM in select/poll to kill some fds and retry */ 2523/* called on ENOMEM in select/poll to kill some fds and retry */
1605static void noinline ecb_cold 2524ecb_noinline ecb_cold
2525static void
1606fd_enomem (EV_P) 2526fd_enomem (EV_P)
1607{ 2527{
1608 int fd; 2528 int fd;
1609 2529
1610 for (fd = anfdmax; fd--; ) 2530 for (fd = anfdmax; fd--; )
… …
1614 break; 2534 break;
1615 } 2535 }
1616} 2536}
1617 2537
1618/* usually called after fork if backend needs to re-arm all fds from scratch */ 2538/* usually called after fork if backend needs to re-arm all fds from scratch */
1619static void noinline 2539ecb_noinline
2540static void
1620fd_rearm_all (EV_P) 2541fd_rearm_all (EV_P)
1621{ 2542{
1622 int fd; 2543 int fd;
1623 2544
1624 for (fd = 0; fd < anfdmax; ++fd) 2545 for (fd = 0; fd < anfdmax; ++fd)
… …
1677 ev_tstamp minat; 2598 ev_tstamp minat;
1678 ANHE *minpos; 2599 ANHE *minpos;
1679 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; 2600 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1680 2601
1681 /* find minimum child */ 2602 /* find minimum child */
1682 if (expect_true (pos + DHEAP - 1 < E)) 2603 if (ecb_expect_true (pos + DHEAP - 1 < E))
1683 { 2604 {
1684 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2605 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1685 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2606 if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1686 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2607 if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1687 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2608 if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1688 } 2609 }
1689 else if (pos < E) 2610 else if (pos < E)
1690 { 2611 {
1691 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 2612 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1692 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 2613 if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1693 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 2614 if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1694 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); 2615 if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1695 } 2616 }
1696 else 2617 else
1697 break; 2618 break;
1698 2619
1699 if (ANHE_at (he) <= minat) 2620 if (ANHE_at (he) <= minat)
… …
1707 2628
1708 heap [k] = he; 2629 heap [k] = he;
1709 ev_active (ANHE_w (he)) = k; 2630 ev_active (ANHE_w (he)) = k;
1710} 2631}
1711 2632
1712#else /* 4HEAP */ 2633#else /* not 4HEAP */
1713 2634
1714#define HEAP0 1 2635#define HEAP0 1
1715#define HPARENT(k) ((k) >> 1) 2636#define HPARENT(k) ((k) >> 1)
1716#define UPHEAP_DONE(p,k) (!(p)) 2637#define UPHEAP_DONE(p,k) (!(p))
1717 2638
… …
1789 upheap (heap, i + HEAP0); 2710 upheap (heap, i + HEAP0);
1790} 2711}
1791 2712
1792/*****************************************************************************/ 2713/*****************************************************************************/
1793 2714
1794/* associate signal watchers to a signal signal */ 2715/* associate signal watchers to a signal */
1795typedef struct 2716typedef struct
1796{ 2717{
1797 EV_ATOMIC_T pending; 2718 EV_ATOMIC_T pending;
1798#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
1799 EV_P; 2720 EV_P;
… …
1805 2726
1806/*****************************************************************************/ 2727/*****************************************************************************/
1807 2728
1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2729#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1809 2730
1810static void noinline ecb_cold 2731ecb_noinline ecb_cold
2732static void
1811evpipe_init (EV_P) 2733evpipe_init (EV_P)
1812{ 2734{
1813 if (!ev_is_active (&pipe_w)) 2735 if (!ev_is_active (&pipe_w))
1814 { 2736 {
2737 int fds [2];
2738
1815# if EV_USE_EVENTFD 2739# if EV_USE_EVENTFD
2740 fds [0] = -1;
1816 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2741 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1817 if (evfd < 0 && errno == EINVAL) 2742 if (fds [1] < 0 && errno == EINVAL)
1818 evfd = eventfd (0, 0); 2743 fds [1] = eventfd (0, 0);
1819 2744
1820 if (evfd >= 0) 2745 if (fds [1] < 0)
2746# endif
1821 { 2747 {
2748 while (pipe (fds))
2749 ev_syserr ("(libev) error creating signal/async pipe");
2750
2751 fd_intern (fds [0]);
2752 }
2753
1822 evpipe [0] = -1; 2754 evpipe [0] = fds [0];
1823 fd_intern (evfd); /* doing it twice doesn't hurt */ 2755
1824 ev_io_set (&pipe_w, evfd, EV_READ); 2756 if (evpipe [1] < 0)
2757 evpipe [1] = fds [1]; /* first call, set write fd */
2758 else
2759 {
2760 /* on subsequent calls, do not change evpipe [1] */
2761 /* so that evpipe_write can always rely on its value. */
2762 /* this branch does not do anything sensible on windows, */
2763 /* so must not be executed on windows */
2764
2765 dup2 (fds [1], evpipe [1]);
2766 close (fds [1]);
2767 }
2768
2769 fd_intern (evpipe [1]);
2770
2771 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2772 ev_io_start (EV_A_ &pipe_w);
2773 ev_unref (EV_A); /* watcher should not keep loop alive */
2774 }
2775}
2776
2777inline_speed void
2778evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2779{
2780 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2781
2782 if (ecb_expect_true (*flag))
2783 return;
2784
2785 *flag = 1;
2786 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2787
2788 pipe_write_skipped = 1;
2789
2790 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2791
2792 if (pipe_write_wanted)
2793 {
2794 int old_errno;
2795
2796 pipe_write_skipped = 0;
2797 ECB_MEMORY_FENCE_RELEASE;
2798
2799 old_errno = errno; /* save errno because write will clobber it */
2800
2801#if EV_USE_EVENTFD
2802 if (evpipe [0] < 0)
2803 {
2804 uint64_t counter = 1;
2805 write (evpipe [1], &counter, sizeof (uint64_t));
1825 } 2806 }
1826 else 2807 else
1827# endif 2808#endif
1828 { 2809 {
1829 while (pipe (evpipe)) 2810#ifdef _WIN32
1830 ev_syserr ("(libev) error creating signal/async pipe"); 2811 WSABUF buf;
1831 2812 DWORD sent;
1832 fd_intern (evpipe [0]); 2813 buf.buf = (char *)&buf;
1833 fd_intern (evpipe [1]); 2814 buf.len = 1;
1834 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2815 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1835 } 2816#else
1836
1837 ev_io_start (EV_A_ &pipe_w);
1838 ev_unref (EV_A); /* watcher should not keep loop alive */
1839 }
1840}
1841
1842inline_speed void
1843evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1844{
1845 if (expect_true (*flag))
1846 return;
1847
1848 *flag = 1;
1849
1850 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1851
1852 pipe_write_skipped = 1;
1853
1854 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1855
1856 if (pipe_write_wanted)
1857 {
1858 int old_errno;
1859
1860 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1861
1862 old_errno = errno; /* save errno because write will clobber it */
1863
1864#if EV_USE_EVENTFD
1865 if (evfd >= 0)
1866 {
1867 uint64_t counter = 1;
1868 write (evfd, &counter, sizeof (uint64_t));
1869 }
1870 else
1871#endif
1872 {
1873 /* win32 people keep sending patches that change this write() to send() */
1874 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1875 /* so when you think this write should be a send instead, please find out */
1876 /* where your send() is from - it's definitely not the microsoft send, and */
1877 /* tell me. thank you. */
1878 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1879 /* check the ev documentation on how to use this flag */
1880 write (evpipe [1], &(evpipe [1]), 1); 2817 write (evpipe [1], &(evpipe [1]), 1);
2818#endif
1881 } 2819 }
1882 2820
1883 errno = old_errno; 2821 errno = old_errno;
1884 } 2822 }
1885} 2823}
… …
1892 int i; 2830 int i;
1893 2831
1894 if (revents & EV_READ) 2832 if (revents & EV_READ)
1895 { 2833 {
1896#if EV_USE_EVENTFD 2834#if EV_USE_EVENTFD
1897 if (evfd >= 0) 2835 if (evpipe [0] < 0)
1898 { 2836 {
1899 uint64_t counter; 2837 uint64_t counter;
1900 read (evfd, &counter, sizeof (uint64_t)); 2838 read (evpipe [1], &counter, sizeof (uint64_t));
1901 } 2839 }
1902 else 2840 else
1903#endif 2841#endif
1904 { 2842 {
1905 char dummy; 2843 char dummy[4];
1906 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2844#ifdef _WIN32
2845 WSABUF buf;
2846 DWORD recvd;
2847 DWORD flags = 0;
2848 buf.buf = dummy;
2849 buf.len = sizeof (dummy);
2850 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2851#else
1907 read (evpipe [0], &dummy, 1); 2852 read (evpipe [0], &dummy, sizeof (dummy));
2853#endif
1908 } 2854 }
1909 } 2855 }
1910 2856
1911 pipe_write_skipped = 0; 2857 pipe_write_skipped = 0;
2858
2859 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1912 2860
1913#if EV_SIGNAL_ENABLE 2861#if EV_SIGNAL_ENABLE
1914 if (sig_pending) 2862 if (sig_pending)
1915 { 2863 {
1916 sig_pending = 0; 2864 sig_pending = 0;
1917 2865
2866 ECB_MEMORY_FENCE;
2867
1918 for (i = EV_NSIG - 1; i--; ) 2868 for (i = EV_NSIG - 1; i--; )
1919 if (expect_false (signals [i].pending)) 2869 if (ecb_expect_false (signals [i].pending))
1920 ev_feed_signal_event (EV_A_ i + 1); 2870 ev_feed_signal_event (EV_A_ i + 1);
1921 } 2871 }
1922#endif 2872#endif
1923 2873
1924#if EV_ASYNC_ENABLE 2874#if EV_ASYNC_ENABLE
1925 if (async_pending) 2875 if (async_pending)
1926 { 2876 {
1927 async_pending = 0; 2877 async_pending = 0;
2878
2879 ECB_MEMORY_FENCE;
1928 2880
1929 for (i = asynccnt; i--; ) 2881 for (i = asynccnt; i--; )
1930 if (asyncs [i]->sent) 2882 if (asyncs [i]->sent)
1931 { 2883 {
1932 asyncs [i]->sent = 0; 2884 asyncs [i]->sent = 0;
2885 ECB_MEMORY_FENCE_RELEASE;
1933 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2886 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1934 } 2887 }
1935 } 2888 }
1936#endif 2889#endif
1937} 2890}
1938 2891
1939/*****************************************************************************/ 2892/*****************************************************************************/
1940 2893
1941void 2894void
1942ev_feed_signal (int signum) 2895ev_feed_signal (int signum) EV_NOEXCEPT
1943{ 2896{
1944#if EV_MULTIPLICITY 2897#if EV_MULTIPLICITY
2898 EV_P;
2899 ECB_MEMORY_FENCE_ACQUIRE;
1945 EV_P = signals [signum - 1].loop; 2900 EV_A = signals [signum - 1].loop;
1946 2901
1947 if (!EV_A) 2902 if (!EV_A)
1948 return; 2903 return;
1949#endif 2904#endif
1950 2905
1951 if (!ev_active (&pipe_w))
1952 return;
1953
1954 signals [signum - 1].pending = 1; 2906 signals [signum - 1].pending = 1;
1955 evpipe_write (EV_A_ &sig_pending); 2907 evpipe_write (EV_A_ &sig_pending);
1956} 2908}
1957 2909
1958static void 2910static void
… …
1963#endif 2915#endif
1964 2916
1965 ev_feed_signal (signum); 2917 ev_feed_signal (signum);
1966} 2918}
1967 2919
1968void noinline 2920ecb_noinline
2921void
1969ev_feed_signal_event (EV_P_ int signum) 2922ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT
1970{ 2923{
1971 WL w; 2924 WL w;
1972 2925
1973 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2926 if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG))
1974 return; 2927 return;
1975 2928
1976 --signum; 2929 --signum;
1977 2930
1978#if EV_MULTIPLICITY 2931#if EV_MULTIPLICITY
1979 /* it is permissible to try to feed a signal to the wrong loop */ 2932 /* it is permissible to try to feed a signal to the wrong loop */
1980 /* or, likely more useful, feeding a signal nobody is waiting for */ 2933 /* or, likely more useful, feeding a signal nobody is waiting for */
1981 2934
1982 if (expect_false (signals [signum].loop != EV_A)) 2935 if (ecb_expect_false (signals [signum].loop != EV_A))
1983 return; 2936 return;
1984#endif 2937#endif
1985 2938
1986 signals [signum].pending = 0; 2939 signals [signum].pending = 0;
2940 ECB_MEMORY_FENCE_RELEASE;
1987 2941
1988 for (w = signals [signum].head; w; w = w->next) 2942 for (w = signals [signum].head; w; w = w->next)
1989 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2943 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1990} 2944}
1991 2945
… …
2070 3024
2071#endif 3025#endif
2072 3026
2073/*****************************************************************************/ 3027/*****************************************************************************/
2074 3028
3029#if EV_USE_TIMERFD
3030
3031static void periodics_reschedule (EV_P);
3032
3033static void
3034timerfdcb (EV_P_ ev_io *iow, int revents)
3035{
3036 struct itimerspec its = { 0 };
3037
3038 its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2;
3039 timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0);
3040
3041 ev_rt_now = ev_time ();
3042 /* periodics_reschedule only needs ev_rt_now */
3043 /* but maybe in the future we want the full treatment. */
3044 /*
3045 now_floor = EV_TS_CONST (0.);
3046 time_update (EV_A_ EV_TSTAMP_HUGE);
3047 */
3048 periodics_reschedule (EV_A);
3049}
3050
3051ecb_noinline ecb_cold
3052static void
3053evtimerfd_init (EV_P)
3054{
3055 if (!ev_is_active (&timerfd_w))
3056 {
3057 timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
3058
3059 if (timerfd >= 0)
3060 {
3061 fd_intern (timerfd); /* just to be sure */
3062
3063 ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ);
3064 ev_set_priority (&timerfd_w, EV_MINPRI);
3065 ev_io_start (EV_A_ &timerfd_w);
3066 ev_unref (EV_A); /* watcher should not keep loop alive */
3067
3068 /* (re-) arm timer */
3069 timerfdcb (EV_A_ 0, 0);
3070 }
3071 }
3072}
3073
3074#endif
3075
3076/*****************************************************************************/
3077
2075#if EV_USE_IOCP 3078#if EV_USE_IOCP
2076# include "ev_iocp.c" 3079# include "ev_iocp.c"
2077#endif 3080#endif
2078#if EV_USE_PORT 3081#if EV_USE_PORT
2079# include "ev_port.c" 3082# include "ev_port.c"
… …
2082# include "ev_kqueue.c" 3085# include "ev_kqueue.c"
2083#endif 3086#endif
2084#if EV_USE_EPOLL 3087#if EV_USE_EPOLL
2085# include "ev_epoll.c" 3088# include "ev_epoll.c"
2086#endif 3089#endif
3090#if EV_USE_LINUXAIO
3091# include "ev_linuxaio.c"
3092#endif
3093#if EV_USE_IOURING
3094# include "ev_iouring.c"
3095#endif
2087#if EV_USE_POLL 3096#if EV_USE_POLL
2088# include "ev_poll.c" 3097# include "ev_poll.c"
2089#endif 3098#endif
2090#if EV_USE_SELECT 3099#if EV_USE_SELECT
2091# include "ev_select.c" 3100# include "ev_select.c"
2092#endif 3101#endif
2093 3102
2094int ecb_cold 3103ecb_cold int
2095ev_version_major (void) 3104ev_version_major (void) EV_NOEXCEPT
2096{ 3105{
2097 return EV_VERSION_MAJOR; 3106 return EV_VERSION_MAJOR;
2098} 3107}
2099 3108
2100int ecb_cold 3109ecb_cold int
2101ev_version_minor (void) 3110ev_version_minor (void) EV_NOEXCEPT
2102{ 3111{
2103 return EV_VERSION_MINOR; 3112 return EV_VERSION_MINOR;
2104} 3113}
2105 3114
2106/* return true if we are running with elevated privileges and should ignore env variables */ 3115/* return true if we are running with elevated privileges and should ignore env variables */
2107int inline_size ecb_cold 3116inline_size ecb_cold int
2108enable_secure (void) 3117enable_secure (void)
2109{ 3118{
2110#ifdef _WIN32 3119#ifdef _WIN32
2111 return 0; 3120 return 0;
2112#else 3121#else
2113 return getuid () != geteuid () 3122 return getuid () != geteuid ()
2114 || getgid () != getegid (); 3123 || getgid () != getegid ();
2115#endif 3124#endif
2116} 3125}
2117 3126
2118unsigned int ecb_cold 3127ecb_cold
3128unsigned int
2119ev_supported_backends (void) 3129ev_supported_backends (void) EV_NOEXCEPT
2120{ 3130{
2121 unsigned int flags = 0; 3131 unsigned int flags = 0;
2122 3132
2123 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 3133 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2124 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 3134 if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE;
2125 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; 3135 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
2126 if (EV_USE_POLL ) flags |= EVBACKEND_POLL; 3136 if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO;
2127 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 3137 if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */
2128 3138 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
3139 if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT;
3140
2129 return flags; 3141 return flags;
2130} 3142}
2131 3143
2132unsigned int ecb_cold 3144ecb_cold
3145unsigned int
2133ev_recommended_backends (void) 3146ev_recommended_backends (void) EV_NOEXCEPT
2134{ 3147{
2135 unsigned int flags = ev_supported_backends (); 3148 unsigned int flags = ev_supported_backends ();
2136 3149
2137#ifndef __NetBSD__ 3150#ifndef __NetBSD__
2138 /* kqueue is borked on everything but netbsd apparently */ 3151 /* kqueue is borked on everything but netbsd apparently */
… …
2146#endif 3159#endif
2147#ifdef __FreeBSD__ 3160#ifdef __FreeBSD__
2148 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ 3161 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2149#endif 3162#endif
2150 3163
3164 /* TODO: linuxaio is very experimental */
3165#if !EV_RECOMMEND_LINUXAIO
3166 flags &= ~EVBACKEND_LINUXAIO;
3167#endif
3168 /* TODO: linuxaio is super experimental */
3169#if !EV_RECOMMEND_IOURING
3170 flags &= ~EVBACKEND_IOURING;
3171#endif
3172
2151 return flags; 3173 return flags;
2152} 3174}
2153 3175
2154unsigned int ecb_cold 3176ecb_cold
3177unsigned int
2155ev_embeddable_backends (void) 3178ev_embeddable_backends (void) EV_NOEXCEPT
2156{ 3179{
2157 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 3180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING;
2158 3181
2159 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 3182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2160 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 3183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2161 flags &= ~EVBACKEND_EPOLL; 3184 flags &= ~EVBACKEND_EPOLL;
2162 3185
3186 /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */
3187
2163 return flags; 3188 return flags;
2164} 3189}
2165 3190
2166unsigned int 3191unsigned int
2167ev_backend (EV_P) 3192ev_backend (EV_P) EV_NOEXCEPT
2168{ 3193{
2169 return backend; 3194 return backend;
2170} 3195}
2171 3196
2172#if EV_FEATURE_API 3197#if EV_FEATURE_API
2173unsigned int 3198unsigned int
2174ev_iteration (EV_P) 3199ev_iteration (EV_P) EV_NOEXCEPT
2175{ 3200{
2176 return loop_count; 3201 return loop_count;
2177} 3202}
2178 3203
2179unsigned int 3204unsigned int
2180ev_depth (EV_P) 3205ev_depth (EV_P) EV_NOEXCEPT
2181{ 3206{
2182 return loop_depth; 3207 return loop_depth;
2183} 3208}
2184 3209
2185void 3210void
2186ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 3211ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2187{ 3212{
2188 io_blocktime = interval; 3213 io_blocktime = interval;
2189} 3214}
2190 3215
2191void 3216void
2192ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 3217ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT
2193{ 3218{
2194 timeout_blocktime = interval; 3219 timeout_blocktime = interval;
2195} 3220}
2196 3221
2197void 3222void
2198ev_set_userdata (EV_P_ void *data) 3223ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT
2199{ 3224{
2200 userdata = data; 3225 userdata = data;
2201} 3226}
2202 3227
2203void * 3228void *
2204ev_userdata (EV_P) 3229ev_userdata (EV_P) EV_NOEXCEPT
2205{ 3230{
2206 return userdata; 3231 return userdata;
2207} 3232}
2208 3233
2209void 3234void
2210ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 3235ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT
2211{ 3236{
2212 invoke_cb = invoke_pending_cb; 3237 invoke_cb = invoke_pending_cb;
2213} 3238}
2214 3239
2215void 3240void
2216ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 3241ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT
2217{ 3242{
2218 release_cb = release; 3243 release_cb = release;
2219 acquire_cb = acquire; 3244 acquire_cb = acquire;
2220} 3245}
2221#endif 3246#endif
2222 3247
2223/* initialise a loop structure, must be zero-initialised */ 3248/* initialise a loop structure, must be zero-initialised */
2224static void noinline ecb_cold 3249ecb_noinline ecb_cold
3250static void
2225loop_init (EV_P_ unsigned int flags) 3251loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT
2226{ 3252{
2227 if (!backend) 3253 if (!backend)
2228 { 3254 {
2229 origflags = flags; 3255 origflags = flags;
2230 3256
… …
2275#if EV_ASYNC_ENABLE 3301#if EV_ASYNC_ENABLE
2276 async_pending = 0; 3302 async_pending = 0;
2277#endif 3303#endif
2278 pipe_write_skipped = 0; 3304 pipe_write_skipped = 0;
2279 pipe_write_wanted = 0; 3305 pipe_write_wanted = 0;
3306 evpipe [0] = -1;
3307 evpipe [1] = -1;
2280#if EV_USE_INOTIFY 3308#if EV_USE_INOTIFY
2281 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 3309 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2282#endif 3310#endif
2283#if EV_USE_SIGNALFD 3311#if EV_USE_SIGNALFD
2284 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 3312 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2285#endif 3313#endif
3314#if EV_USE_TIMERFD
3315 timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2;
3316#endif
2286 3317
2287 if (!(flags & EVBACKEND_MASK)) 3318 if (!(flags & EVBACKEND_MASK))
2288 flags |= ev_recommended_backends (); 3319 flags |= ev_recommended_backends ();
2289 3320
2290#if EV_USE_IOCP 3321#if EV_USE_IOCP
2291 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 3322 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2292#endif 3323#endif
2293#if EV_USE_PORT 3324#if EV_USE_PORT
2294 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 3325 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
2295#endif 3326#endif
2296#if EV_USE_KQUEUE 3327#if EV_USE_KQUEUE
2297 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 3328 if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags);
3329#endif
3330#if EV_USE_IOURING
3331 if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags);
3332#endif
3333#if EV_USE_LINUXAIO
3334 if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags);
2298#endif 3335#endif
2299#if EV_USE_EPOLL 3336#if EV_USE_EPOLL
2300 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); 3337 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
2301#endif 3338#endif
2302#if EV_USE_POLL 3339#if EV_USE_POLL
2303 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); 3340 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
2304#endif 3341#endif
2305#if EV_USE_SELECT 3342#if EV_USE_SELECT
2306 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 3343 if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags);
2307#endif 3344#endif
2308 3345
2309 ev_prepare_init (&pending_w, pendingcb); 3346 ev_prepare_init (&pending_w, pendingcb);
2310 3347
2311#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 3348#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
… …
2314#endif 3351#endif
2315 } 3352 }
2316} 3353}
2317 3354
2318/* free up a loop structure */ 3355/* free up a loop structure */
2319void ecb_cold 3356ecb_cold
3357void
2320ev_loop_destroy (EV_P) 3358ev_loop_destroy (EV_P)
2321{ 3359{
2322 int i; 3360 int i;
2323 3361
2324#if EV_MULTIPLICITY 3362#if EV_MULTIPLICITY
… …
2327 return; 3365 return;
2328#endif 3366#endif
2329 3367
2330#if EV_CLEANUP_ENABLE 3368#if EV_CLEANUP_ENABLE
2331 /* queue cleanup watchers (and execute them) */ 3369 /* queue cleanup watchers (and execute them) */
2332 if (expect_false (cleanupcnt)) 3370 if (ecb_expect_false (cleanupcnt))
2333 { 3371 {
2334 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); 3372 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2335 EV_INVOKE_PENDING; 3373 EV_INVOKE_PENDING;
2336 } 3374 }
2337#endif 3375#endif
2338 3376
2339#if EV_CHILD_ENABLE 3377#if EV_CHILD_ENABLE
2340 if (ev_is_active (&childev)) 3378 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2341 { 3379 {
2342 ev_ref (EV_A); /* child watcher */ 3380 ev_ref (EV_A); /* child watcher */
2343 ev_signal_stop (EV_A_ &childev); 3381 ev_signal_stop (EV_A_ &childev);
2344 } 3382 }
2345#endif 3383#endif
… …
2347 if (ev_is_active (&pipe_w)) 3385 if (ev_is_active (&pipe_w))
2348 { 3386 {
2349 /*ev_ref (EV_A);*/ 3387 /*ev_ref (EV_A);*/
2350 /*ev_io_stop (EV_A_ &pipe_w);*/ 3388 /*ev_io_stop (EV_A_ &pipe_w);*/
2351 3389
2352#if EV_USE_EVENTFD
2353 if (evfd >= 0)
2354 close (evfd);
2355#endif
2356
2357 if (evpipe [0] >= 0)
2358 {
2359 EV_WIN32_CLOSE_FD (evpipe [0]); 3390 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2360 EV_WIN32_CLOSE_FD (evpipe [1]); 3391 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2361 }
2362 } 3392 }
2363 3393
2364#if EV_USE_SIGNALFD 3394#if EV_USE_SIGNALFD
2365 if (ev_is_active (&sigfd_w)) 3395 if (ev_is_active (&sigfd_w))
2366 close (sigfd); 3396 close (sigfd);
2367#endif 3397#endif
2368 3398
3399#if EV_USE_TIMERFD
3400 if (ev_is_active (&timerfd_w))
3401 close (timerfd);
3402#endif
3403
2369#if EV_USE_INOTIFY 3404#if EV_USE_INOTIFY
2370 if (fs_fd >= 0) 3405 if (fs_fd >= 0)
2371 close (fs_fd); 3406 close (fs_fd);
2372#endif 3407#endif
2373 3408
2374 if (backend_fd >= 0) 3409 if (backend_fd >= 0)
2375 close (backend_fd); 3410 close (backend_fd);
2376 3411
2377#if EV_USE_IOCP 3412#if EV_USE_IOCP
2378 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); 3413 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2379#endif 3414#endif
2380#if EV_USE_PORT 3415#if EV_USE_PORT
2381 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 3416 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
2382#endif 3417#endif
2383#if EV_USE_KQUEUE 3418#if EV_USE_KQUEUE
2384 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 3419 if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A);
3420#endif
3421#if EV_USE_IOURING
3422 if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A);
3423#endif
3424#if EV_USE_LINUXAIO
3425 if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A);
2385#endif 3426#endif
2386#if EV_USE_EPOLL 3427#if EV_USE_EPOLL
2387 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); 3428 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
2388#endif 3429#endif
2389#if EV_USE_POLL 3430#if EV_USE_POLL
2390 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); 3431 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
2391#endif 3432#endif
2392#if EV_USE_SELECT 3433#if EV_USE_SELECT
2393 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 3434 if (backend == EVBACKEND_SELECT ) select_destroy (EV_A);
2394#endif 3435#endif
2395 3436
2396 for (i = NUMPRI; i--; ) 3437 for (i = NUMPRI; i--; )
2397 { 3438 {
2398 array_free (pending, [i]); 3439 array_free (pending, [i]);
… …
2440 3481
2441inline_size void 3482inline_size void
2442loop_fork (EV_P) 3483loop_fork (EV_P)
2443{ 3484{
2444#if EV_USE_PORT 3485#if EV_USE_PORT
2445 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 3486 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
2446#endif 3487#endif
2447#if EV_USE_KQUEUE 3488#if EV_USE_KQUEUE
2448 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 3489 if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A);
3490#endif
3491#if EV_USE_IOURING
3492 if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A);
3493#endif
3494#if EV_USE_LINUXAIO
3495 if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A);
2449#endif 3496#endif
2450#if EV_USE_EPOLL 3497#if EV_USE_EPOLL
2451 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 3498 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
2452#endif 3499#endif
2453#if EV_USE_INOTIFY 3500#if EV_USE_INOTIFY
2454 infy_fork (EV_A); 3501 infy_fork (EV_A);
2455#endif 3502#endif
2456 3503
3504 if (postfork != 2)
3505 {
3506 #if EV_USE_SIGNALFD
3507 /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */
3508 #endif
3509
3510 #if EV_USE_TIMERFD
3511 if (ev_is_active (&timerfd_w))
3512 {
3513 ev_ref (EV_A);
3514 ev_io_stop (EV_A_ &timerfd_w);
3515
3516 close (timerfd);
3517 timerfd = -2;
3518
3519 evtimerfd_init (EV_A);
3520 /* reschedule periodics, in case we missed something */
3521 ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM);
3522 }
3523 #endif
3524
3525 #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2457 if (ev_is_active (&pipe_w)) 3526 if (ev_is_active (&pipe_w))
2458 { 3527 {
2459 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3528 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2460 3529
2461 ev_ref (EV_A); 3530 ev_ref (EV_A);
2462 ev_io_stop (EV_A_ &pipe_w); 3531 ev_io_stop (EV_A_ &pipe_w);
2463 3532
2464#if EV_USE_EVENTFD
2465 if (evfd >= 0)
2466 close (evfd);
2467#endif
2468
2469 if (evpipe [0] >= 0) 3533 if (evpipe [0] >= 0)
2470 {
2471 EV_WIN32_CLOSE_FD (evpipe [0]); 3534 EV_WIN32_CLOSE_FD (evpipe [0]);
2472 EV_WIN32_CLOSE_FD (evpipe [1]); 3535
3536 evpipe_init (EV_A);
3537 /* iterate over everything, in case we missed something before */
3538 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2473 } 3539 }
2474 3540 #endif
2475#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2476 evpipe_init (EV_A);
2477 /* now iterate over everything, in case we missed something */
2478 pipecb (EV_A_ &pipe_w, EV_READ);
2479#endif
2480 } 3541 }
2481 3542
2482 postfork = 0; 3543 postfork = 0;
2483} 3544}
2484 3545
2485#if EV_MULTIPLICITY 3546#if EV_MULTIPLICITY
2486 3547
3548ecb_cold
2487struct ev_loop * ecb_cold 3549struct ev_loop *
2488ev_loop_new (unsigned int flags) 3550ev_loop_new (unsigned int flags) EV_NOEXCEPT
2489{ 3551{
2490 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3552 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2491 3553
2492 memset (EV_A, 0, sizeof (struct ev_loop)); 3554 memset (EV_A, 0, sizeof (struct ev_loop));
2493 loop_init (EV_A_ flags); 3555 loop_init (EV_A_ flags);
… …
2500} 3562}
2501 3563
2502#endif /* multiplicity */ 3564#endif /* multiplicity */
2503 3565
2504#if EV_VERIFY 3566#if EV_VERIFY
2505static void noinline ecb_cold 3567ecb_noinline ecb_cold
3568static void
2506verify_watcher (EV_P_ W w) 3569verify_watcher (EV_P_ W w)
2507{ 3570{
2508 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3571 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2509 3572
2510 if (w->pending) 3573 if (w->pending)
2511 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3574 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2512} 3575}
2513 3576
2514static void noinline ecb_cold 3577ecb_noinline ecb_cold
3578static void
2515verify_heap (EV_P_ ANHE *heap, int N) 3579verify_heap (EV_P_ ANHE *heap, int N)
2516{ 3580{
2517 int i; 3581 int i;
2518 3582
2519 for (i = HEAP0; i < N + HEAP0; ++i) 3583 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2524 3588
2525 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3589 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2526 } 3590 }
2527} 3591}
2528 3592
2529static void noinline ecb_cold 3593ecb_noinline ecb_cold
3594static void
2530array_verify (EV_P_ W *ws, int cnt) 3595array_verify (EV_P_ W *ws, int cnt)
2531{ 3596{
2532 while (cnt--) 3597 while (cnt--)
2533 { 3598 {
2534 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3599 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2537} 3602}
2538#endif 3603#endif
2539 3604
2540#if EV_FEATURE_API 3605#if EV_FEATURE_API
2541void ecb_cold 3606void ecb_cold
2542ev_verify (EV_P) 3607ev_verify (EV_P) EV_NOEXCEPT
2543{ 3608{
2544#if EV_VERIFY 3609#if EV_VERIFY
2545 int i; 3610 int i;
2546 WL w; 3611 WL w, w2;
2547 3612
2548 assert (activecnt >= -1); 3613 assert (activecnt >= -1);
2549 3614
2550 assert (fdchangemax >= fdchangecnt); 3615 assert (fdchangemax >= fdchangecnt);
2551 for (i = 0; i < fdchangecnt; ++i) 3616 for (i = 0; i < fdchangecnt; ++i)
2552 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3617 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2553 3618
2554 assert (anfdmax >= 0); 3619 assert (anfdmax >= 0);
2555 for (i = 0; i < anfdmax; ++i) 3620 for (i = 0; i < anfdmax; ++i)
3621 {
3622 int j = 0;
3623
2556 for (w = anfds [i].head; w; w = w->next) 3624 for (w = w2 = anfds [i].head; w; w = w->next)
2557 { 3625 {
2558 verify_watcher (EV_A_ (W)w); 3626 verify_watcher (EV_A_ (W)w);
3627
3628 if (j++ & 1)
3629 {
3630 assert (("libev: io watcher list contains a loop", w != w2));
3631 w2 = w2->next;
3632 }
3633
2559 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3634 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2560 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3635 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2561 } 3636 }
3637 }
2562 3638
2563 assert (timermax >= timercnt); 3639 assert (timermax >= timercnt);
2564 verify_heap (EV_A_ timers, timercnt); 3640 verify_heap (EV_A_ timers, timercnt);
2565 3641
2566#if EV_PERIODIC_ENABLE 3642#if EV_PERIODIC_ENABLE
… …
2612#endif 3688#endif
2613} 3689}
2614#endif 3690#endif
2615 3691
2616#if EV_MULTIPLICITY 3692#if EV_MULTIPLICITY
3693ecb_cold
2617struct ev_loop * ecb_cold 3694struct ev_loop *
2618#else 3695#else
2619int 3696int
2620#endif 3697#endif
2621ev_default_loop (unsigned int flags) 3698ev_default_loop (unsigned int flags) EV_NOEXCEPT
2622{ 3699{
2623 if (!ev_default_loop_ptr) 3700 if (!ev_default_loop_ptr)
2624 { 3701 {
2625#if EV_MULTIPLICITY 3702#if EV_MULTIPLICITY
2626 EV_P = ev_default_loop_ptr = &default_loop_struct; 3703 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2645 3722
2646 return ev_default_loop_ptr; 3723 return ev_default_loop_ptr;
2647} 3724}
2648 3725
2649void 3726void
2650ev_loop_fork (EV_P) 3727ev_loop_fork (EV_P) EV_NOEXCEPT
2651{ 3728{
2652 postfork = 1; /* must be in line with ev_default_fork */ 3729 postfork = 1;
2653} 3730}
2654 3731
2655/*****************************************************************************/ 3732/*****************************************************************************/
2656 3733
2657void 3734void
… …
2659{ 3736{
2660 EV_CB_INVOKE ((W)w, revents); 3737 EV_CB_INVOKE ((W)w, revents);
2661} 3738}
2662 3739
2663unsigned int 3740unsigned int
2664ev_pending_count (EV_P) 3741ev_pending_count (EV_P) EV_NOEXCEPT
2665{ 3742{
2666 int pri; 3743 int pri;
2667 unsigned int count = 0; 3744 unsigned int count = 0;
2668 3745
2669 for (pri = NUMPRI; pri--; ) 3746 for (pri = NUMPRI; pri--; )
2670 count += pendingcnt [pri]; 3747 count += pendingcnt [pri];
2671 3748
2672 return count; 3749 return count;
2673} 3750}
2674 3751
2675void noinline 3752ecb_noinline
3753void
2676ev_invoke_pending (EV_P) 3754ev_invoke_pending (EV_P)
2677{ 3755{
2678 int pri; 3756 pendingpri = NUMPRI;
2679 3757
2680 for (pri = NUMPRI; pri--; ) 3758 do
3759 {
3760 --pendingpri;
3761
3762 /* pendingpri possibly gets modified in the inner loop */
2681 while (pendingcnt [pri]) 3763 while (pendingcnt [pendingpri])
2682 { 3764 {
2683 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3765 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2684 3766
2685 p->w->pending = 0; 3767 p->w->pending = 0;
2686 EV_CB_INVOKE (p->w, p->events); 3768 EV_CB_INVOKE (p->w, p->events);
2687 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
2688 } 3770 }
3771 }
3772 while (pendingpri);
2689} 3773}
2690 3774
2691#if EV_IDLE_ENABLE 3775#if EV_IDLE_ENABLE
2692/* make idle watchers pending. this handles the "call-idle */ 3776/* make idle watchers pending. this handles the "call-idle */
2693/* only when higher priorities are idle" logic */ 3777/* only when higher priorities are idle" logic */
2694inline_size void 3778inline_size void
2695idle_reify (EV_P) 3779idle_reify (EV_P)
2696{ 3780{
2697 if (expect_false (idleall)) 3781 if (ecb_expect_false (idleall))
2698 { 3782 {
2699 int pri; 3783 int pri;
2700 3784
2701 for (pri = NUMPRI; pri--; ) 3785 for (pri = NUMPRI; pri--; )
2702 { 3786 {
… …
2732 { 3816 {
2733 ev_at (w) += w->repeat; 3817 ev_at (w) += w->repeat;
2734 if (ev_at (w) < mn_now) 3818 if (ev_at (w) < mn_now)
2735 ev_at (w) = mn_now; 3819 ev_at (w) = mn_now;
2736 3820
2737 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 3821 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.)));
2738 3822
2739 ANHE_at_cache (timers [HEAP0]); 3823 ANHE_at_cache (timers [HEAP0]);
2740 downheap (timers, timercnt, HEAP0); 3824 downheap (timers, timercnt, HEAP0);
2741 } 3825 }
2742 else 3826 else
… …
2751 } 3835 }
2752} 3836}
2753 3837
2754#if EV_PERIODIC_ENABLE 3838#if EV_PERIODIC_ENABLE
2755 3839
2756static void noinline 3840ecb_noinline
3841static void
2757periodic_recalc (EV_P_ ev_periodic *w) 3842periodic_recalc (EV_P_ ev_periodic *w)
2758{ 3843{
2759 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3844 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2760 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3845 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2761 3846
… …
2763 while (at <= ev_rt_now) 3848 while (at <= ev_rt_now)
2764 { 3849 {
2765 ev_tstamp nat = at + w->interval; 3850 ev_tstamp nat = at + w->interval;
2766 3851
2767 /* when resolution fails us, we use ev_rt_now */ 3852 /* when resolution fails us, we use ev_rt_now */
2768 if (expect_false (nat == at)) 3853 if (ecb_expect_false (nat == at))
2769 { 3854 {
2770 at = ev_rt_now; 3855 at = ev_rt_now;
2771 break; 3856 break;
2772 } 3857 }
2773 3858
… …
2783{ 3868{
2784 EV_FREQUENT_CHECK; 3869 EV_FREQUENT_CHECK;
2785 3870
2786 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3871 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2787 { 3872 {
2788 int feed_count = 0;
2789
2790 do 3873 do
2791 { 3874 {
2792 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3875 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2793 3876
2794 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3877 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2821 } 3904 }
2822} 3905}
2823 3906
2824/* simply recalculate all periodics */ 3907/* simply recalculate all periodics */
2825/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3908/* TODO: maybe ensure that at least one event happens when jumping forward? */
2826static void noinline ecb_cold 3909ecb_noinline ecb_cold
3910static void
2827periodics_reschedule (EV_P) 3911periodics_reschedule (EV_P)
2828{ 3912{
2829 int i; 3913 int i;
2830 3914
2831 /* adjust periodics after time jump */ 3915 /* adjust periodics after time jump */
… …
2844 reheap (periodics, periodiccnt); 3928 reheap (periodics, periodiccnt);
2845} 3929}
2846#endif 3930#endif
2847 3931
2848/* adjust all timers by a given offset */ 3932/* adjust all timers by a given offset */
2849static void noinline ecb_cold 3933ecb_noinline ecb_cold
3934static void
2850timers_reschedule (EV_P_ ev_tstamp adjust) 3935timers_reschedule (EV_P_ ev_tstamp adjust)
2851{ 3936{
2852 int i; 3937 int i;
2853 3938
2854 for (i = 0; i < timercnt; ++i) 3939 for (i = 0; i < timercnt; ++i)
… …
2863/* also detect if there was a timejump, and act accordingly */ 3948/* also detect if there was a timejump, and act accordingly */
2864inline_speed void 3949inline_speed void
2865time_update (EV_P_ ev_tstamp max_block) 3950time_update (EV_P_ ev_tstamp max_block)
2866{ 3951{
2867#if EV_USE_MONOTONIC 3952#if EV_USE_MONOTONIC
2868 if (expect_true (have_monotonic)) 3953 if (ecb_expect_true (have_monotonic))
2869 { 3954 {
2870 int i; 3955 int i;
2871 ev_tstamp odiff = rtmn_diff; 3956 ev_tstamp odiff = rtmn_diff;
2872 3957
2873 mn_now = get_clock (); 3958 mn_now = get_clock ();
2874 3959
2875 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
2876 /* interpolate in the meantime */ 3961 /* interpolate in the meantime */
2877 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 3962 if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5)))
2878 { 3963 {
2879 ev_rt_now = rtmn_diff + mn_now; 3964 ev_rt_now = rtmn_diff + mn_now;
2880 return; 3965 return;
2881 } 3966 }
2882 3967
… …
2896 ev_tstamp diff; 3981 ev_tstamp diff;
2897 rtmn_diff = ev_rt_now - mn_now; 3982 rtmn_diff = ev_rt_now - mn_now;
2898 3983
2899 diff = odiff - rtmn_diff; 3984 diff = odiff - rtmn_diff;
2900 3985
2901 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) 3986 if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP)))
2902 return; /* all is well */ 3987 return; /* all is well */
2903 3988
2904 ev_rt_now = ev_time (); 3989 ev_rt_now = ev_time ();
2905 mn_now = get_clock (); 3990 mn_now = get_clock ();
2906 now_floor = mn_now; 3991 now_floor = mn_now;
… …
2915 else 4000 else
2916#endif 4001#endif
2917 { 4002 {
2918 ev_rt_now = ev_time (); 4003 ev_rt_now = ev_time ();
2919 4004
2920 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 4005 if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP)))
2921 { 4006 {
2922 /* adjust timers. this is easy, as the offset is the same for all of them */ 4007 /* adjust timers. this is easy, as the offset is the same for all of them */
2923 timers_reschedule (EV_A_ ev_rt_now - mn_now); 4008 timers_reschedule (EV_A_ ev_rt_now - mn_now);
2924#if EV_PERIODIC_ENABLE 4009#if EV_PERIODIC_ENABLE
2925 periodics_reschedule (EV_A); 4010 periodics_reschedule (EV_A);
… …
2928 4013
2929 mn_now = ev_rt_now; 4014 mn_now = ev_rt_now;
2930 } 4015 }
2931} 4016}
2932 4017
2933void 4018int
2934ev_run (EV_P_ int flags) 4019ev_run (EV_P_ int flags)
2935{ 4020{
2936#if EV_FEATURE_API 4021#if EV_FEATURE_API
2937 ++loop_depth; 4022 ++loop_depth;
2938#endif 4023#endif
… …
2948#if EV_VERIFY >= 2 4033#if EV_VERIFY >= 2
2949 ev_verify (EV_A); 4034 ev_verify (EV_A);
2950#endif 4035#endif
2951 4036
2952#ifndef _WIN32 4037#ifndef _WIN32
2953 if (expect_false (curpid)) /* penalise the forking check even more */ 4038 if (ecb_expect_false (curpid)) /* penalise the forking check even more */
2954 if (expect_false (getpid () != curpid)) 4039 if (ecb_expect_false (getpid () != curpid))
2955 { 4040 {
2956 curpid = getpid (); 4041 curpid = getpid ();
2957 postfork = 1; 4042 postfork = 1;
2958 } 4043 }
2959#endif 4044#endif
2960 4045
2961#if EV_FORK_ENABLE 4046#if EV_FORK_ENABLE
2962 /* we might have forked, so queue fork handlers */ 4047 /* we might have forked, so queue fork handlers */
2963 if (expect_false (postfork)) 4048 if (ecb_expect_false (postfork))
2964 if (forkcnt) 4049 if (forkcnt)
2965 { 4050 {
2966 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 4051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2967 EV_INVOKE_PENDING; 4052 EV_INVOKE_PENDING;
2968 } 4053 }
2969#endif 4054#endif
2970 4055
2971#if EV_PREPARE_ENABLE 4056#if EV_PREPARE_ENABLE
2972 /* queue prepare watchers (and execute them) */ 4057 /* queue prepare watchers (and execute them) */
2973 if (expect_false (preparecnt)) 4058 if (ecb_expect_false (preparecnt))
2974 { 4059 {
2975 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 4060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2976 EV_INVOKE_PENDING; 4061 EV_INVOKE_PENDING;
2977 } 4062 }
2978#endif 4063#endif
2979 4064
2980 if (expect_false (loop_done)) 4065 if (ecb_expect_false (loop_done))
2981 break; 4066 break;
2982 4067
2983 /* we might have forked, so reify kernel state if necessary */ 4068 /* we might have forked, so reify kernel state if necessary */
2984 if (expect_false (postfork)) 4069 if (ecb_expect_false (postfork))
2985 loop_fork (EV_A); 4070 loop_fork (EV_A);
2986 4071
2987 /* update fd-related kernel structures */ 4072 /* update fd-related kernel structures */
2988 fd_reify (EV_A); 4073 fd_reify (EV_A);
2989 4074
… …
2994 4079
2995 /* remember old timestamp for io_blocktime calculation */ 4080 /* remember old timestamp for io_blocktime calculation */
2996 ev_tstamp prev_mn_now = mn_now; 4081 ev_tstamp prev_mn_now = mn_now;
2997 4082
2998 /* update time to cancel out callback processing overhead */ 4083 /* update time to cancel out callback processing overhead */
2999 time_update (EV_A_ 1e100); 4084 time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE));
3000 4085
3001 /* from now on, we want a pipe-wake-up */ 4086 /* from now on, we want a pipe-wake-up */
3002 pipe_write_wanted = 1; 4087 pipe_write_wanted = 1;
3003 4088
3004 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ 4089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3005 4090
3006 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 4091 if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
3007 { 4092 {
3008 waittime = MAX_BLOCKTIME; 4093 waittime = EV_TS_CONST (MAX_BLOCKTIME);
4094
4095#if EV_USE_TIMERFD
4096 /* sleep a lot longer when we can reliably detect timejumps */
4097 if (ecb_expect_true (timerfd >= 0))
4098 waittime = EV_TS_CONST (MAX_BLOCKTIME2);
4099#endif
3009 4100
3010 if (timercnt) 4101 if (timercnt)
3011 { 4102 {
3012 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; 4103 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
3013 if (waittime > to) waittime = to; 4104 if (waittime > to) waittime = to;
… …
3020 if (waittime > to) waittime = to; 4111 if (waittime > to) waittime = to;
3021 } 4112 }
3022#endif 4113#endif
3023 4114
3024 /* don't let timeouts decrease the waittime below timeout_blocktime */ 4115 /* don't let timeouts decrease the waittime below timeout_blocktime */
3025 if (expect_false (waittime < timeout_blocktime)) 4116 if (ecb_expect_false (waittime < timeout_blocktime))
3026 waittime = timeout_blocktime; 4117 waittime = timeout_blocktime;
3027 4118
3028 /* at this point, we NEED to wait, so we have to ensure */ 4119 /* now there are two more special cases left, either we have
3029 /* to pass a minimum nonzero value to the backend */ 4120 * already-expired timers, so we should not sleep, or we have timers
4121 * that expire very soon, in which case we need to wait for a minimum
4122 * amount of time for some event loop backends.
4123 */
3030 if (expect_false (waittime < backend_mintime)) 4124 if (ecb_expect_false (waittime < backend_mintime))
4125 waittime = waittime <= EV_TS_CONST (0.)
4126 ? EV_TS_CONST (0.)
3031 waittime = backend_mintime; 4127 : backend_mintime;
3032 4128
3033 /* extra check because io_blocktime is commonly 0 */ 4129 /* extra check because io_blocktime is commonly 0 */
3034 if (expect_false (io_blocktime)) 4130 if (ecb_expect_false (io_blocktime))
3035 { 4131 {
3036 sleeptime = io_blocktime - (mn_now - prev_mn_now); 4132 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3037 4133
3038 if (sleeptime > waittime - backend_mintime) 4134 if (sleeptime > waittime - backend_mintime)
3039 sleeptime = waittime - backend_mintime; 4135 sleeptime = waittime - backend_mintime;
3040 4136
3041 if (expect_true (sleeptime > 0.)) 4137 if (ecb_expect_true (sleeptime > EV_TS_CONST (0.)))
3042 { 4138 {
3043 ev_sleep (sleeptime); 4139 ev_sleep (sleeptime);
3044 waittime -= sleeptime; 4140 waittime -= sleeptime;
3045 } 4141 }
3046 } 4142 }
… …
3053 backend_poll (EV_A_ waittime); 4149 backend_poll (EV_A_ waittime);
3054 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 4150 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3055 4151
3056 pipe_write_wanted = 0; /* just an optimisation, no fence needed */ 4152 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3057 4153
4154 ECB_MEMORY_FENCE_ACQUIRE;
3058 if (pipe_write_skipped) 4155 if (pipe_write_skipped)
3059 { 4156 {
3060 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 4157 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3061 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 4158 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3062 } 4159 }
3063 4160
3064
3065 /* update ev_rt_now, do magic */ 4161 /* update ev_rt_now, do magic */
3066 time_update (EV_A_ waittime + sleeptime); 4162 time_update (EV_A_ waittime + sleeptime);
3067 } 4163 }
3068 4164
3069 /* queue pending timers and reschedule them */ 4165 /* queue pending timers and reschedule them */
… …
3077 idle_reify (EV_A); 4173 idle_reify (EV_A);
3078#endif 4174#endif
3079 4175
3080#if EV_CHECK_ENABLE 4176#if EV_CHECK_ENABLE
3081 /* queue check watchers, to be executed first */ 4177 /* queue check watchers, to be executed first */
3082 if (expect_false (checkcnt)) 4178 if (ecb_expect_false (checkcnt))
3083 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 4179 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3084#endif 4180#endif
3085 4181
3086 EV_INVOKE_PENDING; 4182 EV_INVOKE_PENDING;
3087 } 4183 }
3088 while (expect_true ( 4184 while (ecb_expect_true (
3089 activecnt 4185 activecnt
3090 && !loop_done 4186 && !loop_done
3091 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) 4187 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
3092 )); 4188 ));
3093 4189
… …
3095 loop_done = EVBREAK_CANCEL; 4191 loop_done = EVBREAK_CANCEL;
3096 4192
3097#if EV_FEATURE_API 4193#if EV_FEATURE_API
3098 --loop_depth; 4194 --loop_depth;
3099#endif 4195#endif
4196
4197 return activecnt;
3100} 4198}
3101 4199
3102void 4200void
3103ev_break (EV_P_ int how) 4201ev_break (EV_P_ int how) EV_NOEXCEPT
3104{ 4202{
3105 loop_done = how; 4203 loop_done = how;
3106} 4204}
3107 4205
3108void 4206void
3109ev_ref (EV_P) 4207ev_ref (EV_P) EV_NOEXCEPT
3110{ 4208{
3111 ++activecnt; 4209 ++activecnt;
3112} 4210}
3113 4211
3114void 4212void
3115ev_unref (EV_P) 4213ev_unref (EV_P) EV_NOEXCEPT
3116{ 4214{
3117 --activecnt; 4215 --activecnt;
3118} 4216}
3119 4217
3120void 4218void
3121ev_now_update (EV_P) 4219ev_now_update (EV_P) EV_NOEXCEPT
3122{ 4220{
3123 time_update (EV_A_ 1e100); 4221 time_update (EV_A_ EV_TSTAMP_HUGE);
3124} 4222}
3125 4223
3126void 4224void
3127ev_suspend (EV_P) 4225ev_suspend (EV_P) EV_NOEXCEPT
3128{ 4226{
3129 ev_now_update (EV_A); 4227 ev_now_update (EV_A);
3130} 4228}
3131 4229
3132void 4230void
3133ev_resume (EV_P) 4231ev_resume (EV_P) EV_NOEXCEPT
3134{ 4232{
3135 ev_tstamp mn_prev = mn_now; 4233 ev_tstamp mn_prev = mn_now;
3136 4234
3137 ev_now_update (EV_A); 4235 ev_now_update (EV_A);
3138 timers_reschedule (EV_A_ mn_now - mn_prev); 4236 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3155inline_size void 4253inline_size void
3156wlist_del (WL *head, WL elem) 4254wlist_del (WL *head, WL elem)
3157{ 4255{
3158 while (*head) 4256 while (*head)
3159 { 4257 {
3160 if (expect_true (*head == elem)) 4258 if (ecb_expect_true (*head == elem))
3161 { 4259 {
3162 *head = elem->next; 4260 *head = elem->next;
3163 break; 4261 break;
3164 } 4262 }
3165 4263
… …
3177 w->pending = 0; 4275 w->pending = 0;
3178 } 4276 }
3179} 4277}
3180 4278
3181int 4279int
3182ev_clear_pending (EV_P_ void *w) 4280ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT
3183{ 4281{
3184 W w_ = (W)w; 4282 W w_ = (W)w;
3185 int pending = w_->pending; 4283 int pending = w_->pending;
3186 4284
3187 if (expect_true (pending)) 4285 if (ecb_expect_true (pending))
3188 { 4286 {
3189 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 4287 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3190 p->w = (W)&pending_w; 4288 p->w = (W)&pending_w;
3191 w_->pending = 0; 4289 w_->pending = 0;
3192 return p->events; 4290 return p->events;
… …
3219 w->active = 0; 4317 w->active = 0;
3220} 4318}
3221 4319
3222/*****************************************************************************/ 4320/*****************************************************************************/
3223 4321
3224void noinline 4322ecb_noinline
4323void
3225ev_io_start (EV_P_ ev_io *w) 4324ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT
3226{ 4325{
3227 int fd = w->fd; 4326 int fd = w->fd;
3228 4327
3229 if (expect_false (ev_is_active (w))) 4328 if (ecb_expect_false (ev_is_active (w)))
3230 return; 4329 return;
3231 4330
3232 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 4331 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3233 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 4332 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
3234 4333
4334#if EV_VERIFY >= 2
4335 assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd)));
4336#endif
3235 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
3236 4338
3237 ev_start (EV_A_ (W)w, 1); 4339 ev_start (EV_A_ (W)w, 1);
3238 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 4340 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill);
3239 wlist_add (&anfds[fd].head, (WL)w); 4341 wlist_add (&anfds[fd].head, (WL)w);
4342
4343 /* common bug, apparently */
4344 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3240 4345
3241 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 4346 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3242 w->events &= ~EV__IOFDSET; 4347 w->events &= ~EV__IOFDSET;
3243 4348
3244 EV_FREQUENT_CHECK; 4349 EV_FREQUENT_CHECK;
3245} 4350}
3246 4351
3247void noinline 4352ecb_noinline
4353void
3248ev_io_stop (EV_P_ ev_io *w) 4354ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT
3249{ 4355{
3250 clear_pending (EV_A_ (W)w); 4356 clear_pending (EV_A_ (W)w);
3251 if (expect_false (!ev_is_active (w))) 4357 if (ecb_expect_false (!ev_is_active (w)))
3252 return; 4358 return;
3253 4359
3254 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 4360 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
3255 4361
4362#if EV_VERIFY >= 2
4363 assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd)));
4364#endif
3256 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3257 4366
3258 wlist_del (&anfds[w->fd].head, (WL)w); 4367 wlist_del (&anfds[w->fd].head, (WL)w);
3259 ev_stop (EV_A_ (W)w); 4368 ev_stop (EV_A_ (W)w);
3260 4369
3261 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 4370 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3262 4371
3263 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
3264} 4373}
3265 4374
3266void noinline 4375ecb_noinline
4376void
3267ev_timer_start (EV_P_ ev_timer *w) 4377ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT
3268{ 4378{
3269 if (expect_false (ev_is_active (w))) 4379 if (ecb_expect_false (ev_is_active (w)))
3270 return; 4380 return;
3271 4381
3272 ev_at (w) += mn_now; 4382 ev_at (w) += mn_now;
3273 4383
3274 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 4384 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
3275 4385
3276 EV_FREQUENT_CHECK; 4386 EV_FREQUENT_CHECK;
3277 4387
3278 ++timercnt; 4388 ++timercnt;
3279 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 4389 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
3280 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 4390 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit);
3281 ANHE_w (timers [ev_active (w)]) = (WT)w; 4391 ANHE_w (timers [ev_active (w)]) = (WT)w;
3282 ANHE_at_cache (timers [ev_active (w)]); 4392 ANHE_at_cache (timers [ev_active (w)]);
3283 upheap (timers, ev_active (w)); 4393 upheap (timers, ev_active (w));
3284 4394
3285 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
3286 4396
3287 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 4397 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3288} 4398}
3289 4399
3290void noinline 4400ecb_noinline
4401void
3291ev_timer_stop (EV_P_ ev_timer *w) 4402ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT
3292{ 4403{
3293 clear_pending (EV_A_ (W)w); 4404 clear_pending (EV_A_ (W)w);
3294 if (expect_false (!ev_is_active (w))) 4405 if (ecb_expect_false (!ev_is_active (w)))
3295 return; 4406 return;
3296 4407
3297 EV_FREQUENT_CHECK; 4408 EV_FREQUENT_CHECK;
3298 4409
3299 { 4410 {
… …
3301 4412
3302 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 4413 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
3303 4414
3304 --timercnt; 4415 --timercnt;
3305 4416
3306 if (expect_true (active < timercnt + HEAP0)) 4417 if (ecb_expect_true (active < timercnt + HEAP0))
3307 { 4418 {
3308 timers [active] = timers [timercnt + HEAP0]; 4419 timers [active] = timers [timercnt + HEAP0];
3309 adjustheap (timers, timercnt, active); 4420 adjustheap (timers, timercnt, active);
3310 } 4421 }
3311 } 4422 }
… …
3315 ev_stop (EV_A_ (W)w); 4426 ev_stop (EV_A_ (W)w);
3316 4427
3317 EV_FREQUENT_CHECK; 4428 EV_FREQUENT_CHECK;
3318} 4429}
3319 4430
3320void noinline 4431ecb_noinline
4432void
3321ev_timer_again (EV_P_ ev_timer *w) 4433ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT
3322{ 4434{
3323 EV_FREQUENT_CHECK; 4435 EV_FREQUENT_CHECK;
3324 4436
3325 clear_pending (EV_A_ (W)w); 4437 clear_pending (EV_A_ (W)w);
3326 4438
… …
3343 4455
3344 EV_FREQUENT_CHECK; 4456 EV_FREQUENT_CHECK;
3345} 4457}
3346 4458
3347ev_tstamp 4459ev_tstamp
3348ev_timer_remaining (EV_P_ ev_timer *w) 4460ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT
3349{ 4461{
3350 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 4462 return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.));
3351} 4463}
3352 4464
3353#if EV_PERIODIC_ENABLE 4465#if EV_PERIODIC_ENABLE
3354void noinline 4466ecb_noinline
4467void
3355ev_periodic_start (EV_P_ ev_periodic *w) 4468ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT
3356{ 4469{
3357 if (expect_false (ev_is_active (w))) 4470 if (ecb_expect_false (ev_is_active (w)))
3358 return; 4471 return;
4472
4473#if EV_USE_TIMERFD
4474 if (timerfd == -2)
4475 evtimerfd_init (EV_A);
4476#endif
3359 4477
3360 if (w->reschedule_cb) 4478 if (w->reschedule_cb)
3361 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 4479 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
3362 else if (w->interval) 4480 else if (w->interval)
3363 { 4481 {
… …
3369 4487
3370 EV_FREQUENT_CHECK; 4488 EV_FREQUENT_CHECK;
3371 4489
3372 ++periodiccnt; 4490 ++periodiccnt;
3373 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); 4491 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
3374 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 4492 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit);
3375 ANHE_w (periodics [ev_active (w)]) = (WT)w; 4493 ANHE_w (periodics [ev_active (w)]) = (WT)w;
3376 ANHE_at_cache (periodics [ev_active (w)]); 4494 ANHE_at_cache (periodics [ev_active (w)]);
3377 upheap (periodics, ev_active (w)); 4495 upheap (periodics, ev_active (w));
3378 4496
3379 EV_FREQUENT_CHECK; 4497 EV_FREQUENT_CHECK;
3380 4498
3381 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4499 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3382} 4500}
3383 4501
3384void noinline 4502ecb_noinline
4503void
3385ev_periodic_stop (EV_P_ ev_periodic *w) 4504ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT
3386{ 4505{
3387 clear_pending (EV_A_ (W)w); 4506 clear_pending (EV_A_ (W)w);
3388 if (expect_false (!ev_is_active (w))) 4507 if (ecb_expect_false (!ev_is_active (w)))
3389 return; 4508 return;
3390 4509
3391 EV_FREQUENT_CHECK; 4510 EV_FREQUENT_CHECK;
3392 4511
3393 { 4512 {
… …
3395 4514
3396 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 4515 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3397 4516
3398 --periodiccnt; 4517 --periodiccnt;
3399 4518
3400 if (expect_true (active < periodiccnt + HEAP0)) 4519 if (ecb_expect_true (active < periodiccnt + HEAP0))
3401 { 4520 {
3402 periodics [active] = periodics [periodiccnt + HEAP0]; 4521 periodics [active] = periodics [periodiccnt + HEAP0];
3403 adjustheap (periodics, periodiccnt, active); 4522 adjustheap (periodics, periodiccnt, active);
3404 } 4523 }
3405 } 4524 }
… …
3407 ev_stop (EV_A_ (W)w); 4526 ev_stop (EV_A_ (W)w);
3408 4527
3409 EV_FREQUENT_CHECK; 4528 EV_FREQUENT_CHECK;
3410} 4529}
3411 4530
3412void noinline 4531ecb_noinline
4532void
3413ev_periodic_again (EV_P_ ev_periodic *w) 4533ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT
3414{ 4534{
3415 /* TODO: use adjustheap and recalculation */ 4535 /* TODO: use adjustheap and recalculation */
3416 ev_periodic_stop (EV_A_ w); 4536 ev_periodic_stop (EV_A_ w);
3417 ev_periodic_start (EV_A_ w); 4537 ev_periodic_start (EV_A_ w);
3418} 4538}
… …
3422# define SA_RESTART 0 4542# define SA_RESTART 0
3423#endif 4543#endif
3424 4544
3425#if EV_SIGNAL_ENABLE 4545#if EV_SIGNAL_ENABLE
3426 4546
3427void noinline 4547ecb_noinline
4548void
3428ev_signal_start (EV_P_ ev_signal *w) 4549ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT
3429{ 4550{
3430 if (expect_false (ev_is_active (w))) 4551 if (ecb_expect_false (ev_is_active (w)))
3431 return; 4552 return;
3432 4553
3433 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4554 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3434 4555
3435#if EV_MULTIPLICITY 4556#if EV_MULTIPLICITY
3436 assert (("libev: a signal must not be attached to two different loops", 4557 assert (("libev: a signal must not be attached to two different loops",
3437 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4558 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3438 4559
3439 signals [w->signum - 1].loop = EV_A; 4560 signals [w->signum - 1].loop = EV_A;
4561 ECB_MEMORY_FENCE_RELEASE;
3440#endif 4562#endif
3441 4563
3442 EV_FREQUENT_CHECK; 4564 EV_FREQUENT_CHECK;
3443 4565
3444#if EV_USE_SIGNALFD 4566#if EV_USE_SIGNALFD
… …
3503 } 4625 }
3504 4626
3505 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
3506} 4628}
3507 4629
3508void noinline 4630ecb_noinline
4631void
3509ev_signal_stop (EV_P_ ev_signal *w) 4632ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT
3510{ 4633{
3511 clear_pending (EV_A_ (W)w); 4634 clear_pending (EV_A_ (W)w);
3512 if (expect_false (!ev_is_active (w))) 4635 if (ecb_expect_false (!ev_is_active (w)))
3513 return; 4636 return;
3514 4637
3515 EV_FREQUENT_CHECK; 4638 EV_FREQUENT_CHECK;
3516 4639
3517 wlist_del (&signals [w->signum - 1].head, (WL)w); 4640 wlist_del (&signals [w->signum - 1].head, (WL)w);
… …
3545#endif 4668#endif
3546 4669
3547#if EV_CHILD_ENABLE 4670#if EV_CHILD_ENABLE
3548 4671
3549void 4672void
3550ev_child_start (EV_P_ ev_child *w) 4673ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT
3551{ 4674{
3552#if EV_MULTIPLICITY 4675#if EV_MULTIPLICITY
3553 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4676 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3554#endif 4677#endif
3555 if (expect_false (ev_is_active (w))) 4678 if (ecb_expect_false (ev_is_active (w)))
3556 return; 4679 return;
3557 4680
3558 EV_FREQUENT_CHECK; 4681 EV_FREQUENT_CHECK;
3559 4682
3560 ev_start (EV_A_ (W)w, 1); 4683 ev_start (EV_A_ (W)w, 1);
… …
3562 4685
3563 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
3564} 4687}
3565 4688
3566void 4689void
3567ev_child_stop (EV_P_ ev_child *w) 4690ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT
3568{ 4691{
3569 clear_pending (EV_A_ (W)w); 4692 clear_pending (EV_A_ (W)w);
3570 if (expect_false (!ev_is_active (w))) 4693 if (ecb_expect_false (!ev_is_active (w)))
3571 return; 4694 return;
3572 4695
3573 EV_FREQUENT_CHECK; 4696 EV_FREQUENT_CHECK;
3574 4697
3575 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); 4698 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
… …
3589 4712
3590#define DEF_STAT_INTERVAL 5.0074891 4713#define DEF_STAT_INTERVAL 5.0074891
3591#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4714#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3592#define MIN_STAT_INTERVAL 0.1074891 4715#define MIN_STAT_INTERVAL 0.1074891
3593 4716
3594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4717ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3595 4718
3596#if EV_USE_INOTIFY 4719#if EV_USE_INOTIFY
3597 4720
3598/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4721/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3599# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4722# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3600 4723
3601static void noinline 4724ecb_noinline
4725static void
3602infy_add (EV_P_ ev_stat *w) 4726infy_add (EV_P_ ev_stat *w)
3603{ 4727{
3604 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4728 w->wd = inotify_add_watch (fs_fd, w->path,
4729 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4730 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4731 | IN_DONT_FOLLOW | IN_MASK_ADD);
3605 4732
3606 if (w->wd >= 0) 4733 if (w->wd >= 0)
3607 { 4734 {
3608 struct statfs sfs; 4735 struct statfs sfs;
3609 4736
… …
3613 4740
3614 if (!fs_2625) 4741 if (!fs_2625)
3615 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4742 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3616 else if (!statfs (w->path, &sfs) 4743 else if (!statfs (w->path, &sfs)
3617 && (sfs.f_type == 0x1373 /* devfs */ 4744 && (sfs.f_type == 0x1373 /* devfs */
4745 || sfs.f_type == 0x4006 /* fat */
4746 || sfs.f_type == 0x4d44 /* msdos */
3618 || sfs.f_type == 0xEF53 /* ext2/3 */ 4747 || sfs.f_type == 0xEF53 /* ext2/3 */
4748 || sfs.f_type == 0x72b6 /* jffs2 */
4749 || sfs.f_type == 0x858458f6 /* ramfs */
4750 || sfs.f_type == 0x5346544e /* ntfs */
3619 || sfs.f_type == 0x3153464a /* jfs */ 4751 || sfs.f_type == 0x3153464a /* jfs */
4752 || sfs.f_type == 0x9123683e /* btrfs */
3620 || sfs.f_type == 0x52654973 /* reiser3 */ 4753 || sfs.f_type == 0x52654973 /* reiser3 */
3621 || sfs.f_type == 0x01021994 /* tempfs */ 4754 || sfs.f_type == 0x01021994 /* tmpfs */
3622 || sfs.f_type == 0x58465342 /* xfs */)) 4755 || sfs.f_type == 0x58465342 /* xfs */))
3623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4756 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3624 else 4757 else
3625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4758 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3626 } 4759 }
… …
3661 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4794 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3662 ev_timer_again (EV_A_ &w->timer); 4795 ev_timer_again (EV_A_ &w->timer);
3663 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4796 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3664} 4797}
3665 4798
3666static void noinline 4799ecb_noinline
4800static void
3667infy_del (EV_P_ ev_stat *w) 4801infy_del (EV_P_ ev_stat *w)
3668{ 4802{
3669 int slot; 4803 int slot;
3670 int wd = w->wd; 4804 int wd = w->wd;
3671 4805
… …
3678 4812
3679 /* remove this watcher, if others are watching it, they will rearm */ 4813 /* remove this watcher, if others are watching it, they will rearm */
3680 inotify_rm_watch (fs_fd, wd); 4814 inotify_rm_watch (fs_fd, wd);
3681} 4815}
3682 4816
3683static void noinline 4817ecb_noinline
4818static void
3684infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4819infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3685{ 4820{
3686 if (slot < 0) 4821 if (slot < 0)
3687 /* overflow, need to check for all hash slots */ 4822 /* overflow, need to check for all hash slots */
3688 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4823 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3724 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4859 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3725 ofs += sizeof (struct inotify_event) + ev->len; 4860 ofs += sizeof (struct inotify_event) + ev->len;
3726 } 4861 }
3727} 4862}
3728 4863
3729inline_size void ecb_cold 4864inline_size ecb_cold
4865void
3730ev_check_2625 (EV_P) 4866ev_check_2625 (EV_P)
3731{ 4867{
3732 /* kernels < 2.6.25 are borked 4868 /* kernels < 2.6.25 are borked
3733 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4869 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3734 */ 4870 */
… …
3739} 4875}
3740 4876
3741inline_size int 4877inline_size int
3742infy_newfd (void) 4878infy_newfd (void)
3743{ 4879{
3744#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4880#if defined IN_CLOEXEC && defined IN_NONBLOCK
3745 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4881 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3746 if (fd >= 0) 4882 if (fd >= 0)
3747 return fd; 4883 return fd;
3748#endif 4884#endif
3749 return inotify_init (); 4885 return inotify_init ();
… …
3824#else 4960#else
3825# define EV_LSTAT(p,b) lstat (p, b) 4961# define EV_LSTAT(p,b) lstat (p, b)
3826#endif 4962#endif
3827 4963
3828void 4964void
3829ev_stat_stat (EV_P_ ev_stat *w) 4965ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT
3830{ 4966{
3831 if (lstat (w->path, &w->attr) < 0) 4967 if (lstat (w->path, &w->attr) < 0)
3832 w->attr.st_nlink = 0; 4968 w->attr.st_nlink = 0;
3833 else if (!w->attr.st_nlink) 4969 else if (!w->attr.st_nlink)
3834 w->attr.st_nlink = 1; 4970 w->attr.st_nlink = 1;
3835} 4971}
3836 4972
3837static void noinline 4973ecb_noinline
4974static void
3838stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4975stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3839{ 4976{
3840 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4977 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3841 4978
3842 ev_statdata prev = w->attr; 4979 ev_statdata prev = w->attr;
… …
3873 ev_feed_event (EV_A_ w, EV_STAT); 5010 ev_feed_event (EV_A_ w, EV_STAT);
3874 } 5011 }
3875} 5012}
3876 5013
3877void 5014void
3878ev_stat_start (EV_P_ ev_stat *w) 5015ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT
3879{ 5016{
3880 if (expect_false (ev_is_active (w))) 5017 if (ecb_expect_false (ev_is_active (w)))
3881 return; 5018 return;
3882 5019
3883 ev_stat_stat (EV_A_ w); 5020 ev_stat_stat (EV_A_ w);
3884 5021
3885 if (w->interval < MIN_STAT_INTERVAL && w->interval) 5022 if (w->interval < MIN_STAT_INTERVAL && w->interval)
… …
3904 5041
3905 EV_FREQUENT_CHECK; 5042 EV_FREQUENT_CHECK;
3906} 5043}
3907 5044
3908void 5045void
3909ev_stat_stop (EV_P_ ev_stat *w) 5046ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT
3910{ 5047{
3911 clear_pending (EV_A_ (W)w); 5048 clear_pending (EV_A_ (W)w);
3912 if (expect_false (!ev_is_active (w))) 5049 if (ecb_expect_false (!ev_is_active (w)))
3913 return; 5050 return;
3914 5051
3915 EV_FREQUENT_CHECK; 5052 EV_FREQUENT_CHECK;
3916 5053
3917#if EV_USE_INOTIFY 5054#if EV_USE_INOTIFY
… …
3930} 5067}
3931#endif 5068#endif
3932 5069
3933#if EV_IDLE_ENABLE 5070#if EV_IDLE_ENABLE
3934void 5071void
3935ev_idle_start (EV_P_ ev_idle *w) 5072ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT
3936{ 5073{
3937 if (expect_false (ev_is_active (w))) 5074 if (ecb_expect_false (ev_is_active (w)))
3938 return; 5075 return;
3939 5076
3940 pri_adjust (EV_A_ (W)w); 5077 pri_adjust (EV_A_ (W)w);
3941 5078
3942 EV_FREQUENT_CHECK; 5079 EV_FREQUENT_CHECK;
… …
3945 int active = ++idlecnt [ABSPRI (w)]; 5082 int active = ++idlecnt [ABSPRI (w)];
3946 5083
3947 ++idleall; 5084 ++idleall;
3948 ev_start (EV_A_ (W)w, active); 5085 ev_start (EV_A_ (W)w, active);
3949 5086
3950 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 5087 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit);
3951 idles [ABSPRI (w)][active - 1] = w; 5088 idles [ABSPRI (w)][active - 1] = w;
3952 } 5089 }
3953 5090
3954 EV_FREQUENT_CHECK; 5091 EV_FREQUENT_CHECK;
3955} 5092}
3956 5093
3957void 5094void
3958ev_idle_stop (EV_P_ ev_idle *w) 5095ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT
3959{ 5096{
3960 clear_pending (EV_A_ (W)w); 5097 clear_pending (EV_A_ (W)w);
3961 if (expect_false (!ev_is_active (w))) 5098 if (ecb_expect_false (!ev_is_active (w)))
3962 return; 5099 return;
3963 5100
3964 EV_FREQUENT_CHECK; 5101 EV_FREQUENT_CHECK;
3965 5102
3966 { 5103 {
… …
3977} 5114}
3978#endif 5115#endif
3979 5116
3980#if EV_PREPARE_ENABLE 5117#if EV_PREPARE_ENABLE
3981void 5118void
3982ev_prepare_start (EV_P_ ev_prepare *w) 5119ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT
3983{ 5120{
3984 if (expect_false (ev_is_active (w))) 5121 if (ecb_expect_false (ev_is_active (w)))
3985 return; 5122 return;
3986 5123
3987 EV_FREQUENT_CHECK; 5124 EV_FREQUENT_CHECK;
3988 5125
3989 ev_start (EV_A_ (W)w, ++preparecnt); 5126 ev_start (EV_A_ (W)w, ++preparecnt);
3990 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 5127 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit);
3991 prepares [preparecnt - 1] = w; 5128 prepares [preparecnt - 1] = w;
3992 5129
3993 EV_FREQUENT_CHECK; 5130 EV_FREQUENT_CHECK;
3994} 5131}
3995 5132
3996void 5133void
3997ev_prepare_stop (EV_P_ ev_prepare *w) 5134ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT
3998{ 5135{
3999 clear_pending (EV_A_ (W)w); 5136 clear_pending (EV_A_ (W)w);
4000 if (expect_false (!ev_is_active (w))) 5137 if (ecb_expect_false (!ev_is_active (w)))
4001 return; 5138 return;
4002 5139
4003 EV_FREQUENT_CHECK; 5140 EV_FREQUENT_CHECK;
4004 5141
4005 { 5142 {
… …
4015} 5152}
4016#endif 5153#endif
4017 5154
4018#if EV_CHECK_ENABLE 5155#if EV_CHECK_ENABLE
4019void 5156void
4020ev_check_start (EV_P_ ev_check *w) 5157ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT
4021{ 5158{
4022 if (expect_false (ev_is_active (w))) 5159 if (ecb_expect_false (ev_is_active (w)))
4023 return; 5160 return;
4024 5161
4025 EV_FREQUENT_CHECK; 5162 EV_FREQUENT_CHECK;
4026 5163
4027 ev_start (EV_A_ (W)w, ++checkcnt); 5164 ev_start (EV_A_ (W)w, ++checkcnt);
4028 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 5165 array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit);
4029 checks [checkcnt - 1] = w; 5166 checks [checkcnt - 1] = w;
4030 5167
4031 EV_FREQUENT_CHECK; 5168 EV_FREQUENT_CHECK;
4032} 5169}
4033 5170
4034void 5171void
4035ev_check_stop (EV_P_ ev_check *w) 5172ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT
4036{ 5173{
4037 clear_pending (EV_A_ (W)w); 5174 clear_pending (EV_A_ (W)w);
4038 if (expect_false (!ev_is_active (w))) 5175 if (ecb_expect_false (!ev_is_active (w)))
4039 return; 5176 return;
4040 5177
4041 EV_FREQUENT_CHECK; 5178 EV_FREQUENT_CHECK;
4042 5179
4043 { 5180 {
… …
4052 EV_FREQUENT_CHECK; 5189 EV_FREQUENT_CHECK;
4053} 5190}
4054#endif 5191#endif
4055 5192
4056#if EV_EMBED_ENABLE 5193#if EV_EMBED_ENABLE
4057void noinline 5194ecb_noinline
5195void
4058ev_embed_sweep (EV_P_ ev_embed *w) 5196ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT
4059{ 5197{
4060 ev_run (w->other, EVRUN_NOWAIT); 5198 ev_run (w->other, EVRUN_NOWAIT);
4061} 5199}
4062 5200
4063static void 5201static void
… …
4085 ev_run (EV_A_ EVRUN_NOWAIT); 5223 ev_run (EV_A_ EVRUN_NOWAIT);
4086 } 5224 }
4087 } 5225 }
4088} 5226}
4089 5227
5228#if EV_FORK_ENABLE
4090static void 5229static void
4091embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 5230embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4092{ 5231{
4093 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 5232 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4094 5233
… …
4101 ev_run (EV_A_ EVRUN_NOWAIT); 5240 ev_run (EV_A_ EVRUN_NOWAIT);
4102 } 5241 }
4103 5242
4104 ev_embed_start (EV_A_ w); 5243 ev_embed_start (EV_A_ w);
4105} 5244}
5245#endif
4106 5246
4107#if 0 5247#if 0
4108static void 5248static void
4109embed_idle_cb (EV_P_ ev_idle *idle, int revents) 5249embed_idle_cb (EV_P_ ev_idle *idle, int revents)
4110{ 5250{
4111 ev_idle_stop (EV_A_ idle); 5251 ev_idle_stop (EV_A_ idle);
4112} 5252}
4113#endif 5253#endif
4114 5254
4115void 5255void
4116ev_embed_start (EV_P_ ev_embed *w) 5256ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT
4117{ 5257{
4118 if (expect_false (ev_is_active (w))) 5258 if (ecb_expect_false (ev_is_active (w)))
4119 return; 5259 return;
4120 5260
4121 { 5261 {
4122 EV_P = w->other; 5262 EV_P = w->other;
4123 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 5263 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
… …
4131 5271
4132 ev_prepare_init (&w->prepare, embed_prepare_cb); 5272 ev_prepare_init (&w->prepare, embed_prepare_cb);
4133 ev_set_priority (&w->prepare, EV_MINPRI); 5273 ev_set_priority (&w->prepare, EV_MINPRI);
4134 ev_prepare_start (EV_A_ &w->prepare); 5274 ev_prepare_start (EV_A_ &w->prepare);
4135 5275
5276#if EV_FORK_ENABLE
4136 ev_fork_init (&w->fork, embed_fork_cb); 5277 ev_fork_init (&w->fork, embed_fork_cb);
4137 ev_fork_start (EV_A_ &w->fork); 5278 ev_fork_start (EV_A_ &w->fork);
5279#endif
4138 5280
4139 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 5281 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
4140 5282
4141 ev_start (EV_A_ (W)w, 1); 5283 ev_start (EV_A_ (W)w, 1);
4142 5284
4143 EV_FREQUENT_CHECK; 5285 EV_FREQUENT_CHECK;
4144} 5286}
4145 5287
4146void 5288void
4147ev_embed_stop (EV_P_ ev_embed *w) 5289ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT
4148{ 5290{
4149 clear_pending (EV_A_ (W)w); 5291 clear_pending (EV_A_ (W)w);
4150 if (expect_false (!ev_is_active (w))) 5292 if (ecb_expect_false (!ev_is_active (w)))
4151 return; 5293 return;
4152 5294
4153 EV_FREQUENT_CHECK; 5295 EV_FREQUENT_CHECK;
4154 5296
4155 ev_io_stop (EV_A_ &w->io); 5297 ev_io_stop (EV_A_ &w->io);
4156 ev_prepare_stop (EV_A_ &w->prepare); 5298 ev_prepare_stop (EV_A_ &w->prepare);
5299#if EV_FORK_ENABLE
4157 ev_fork_stop (EV_A_ &w->fork); 5300 ev_fork_stop (EV_A_ &w->fork);
5301#endif
4158 5302
4159 ev_stop (EV_A_ (W)w); 5303 ev_stop (EV_A_ (W)w);
4160 5304
4161 EV_FREQUENT_CHECK; 5305 EV_FREQUENT_CHECK;
4162} 5306}
4163#endif 5307#endif
4164 5308
4165#if EV_FORK_ENABLE 5309#if EV_FORK_ENABLE
4166void 5310void
4167ev_fork_start (EV_P_ ev_fork *w) 5311ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT
4168{ 5312{
4169 if (expect_false (ev_is_active (w))) 5313 if (ecb_expect_false (ev_is_active (w)))
4170 return; 5314 return;
4171 5315
4172 EV_FREQUENT_CHECK; 5316 EV_FREQUENT_CHECK;
4173 5317
4174 ev_start (EV_A_ (W)w, ++forkcnt); 5318 ev_start (EV_A_ (W)w, ++forkcnt);
4175 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 5319 array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit);
4176 forks [forkcnt - 1] = w; 5320 forks [forkcnt - 1] = w;
4177 5321
4178 EV_FREQUENT_CHECK; 5322 EV_FREQUENT_CHECK;
4179} 5323}
4180 5324
4181void 5325void
4182ev_fork_stop (EV_P_ ev_fork *w) 5326ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT
4183{ 5327{
4184 clear_pending (EV_A_ (W)w); 5328 clear_pending (EV_A_ (W)w);
4185 if (expect_false (!ev_is_active (w))) 5329 if (ecb_expect_false (!ev_is_active (w)))
4186 return; 5330 return;
4187 5331
4188 EV_FREQUENT_CHECK; 5332 EV_FREQUENT_CHECK;
4189 5333
4190 { 5334 {
… …
4200} 5344}
4201#endif 5345#endif
4202 5346
4203#if EV_CLEANUP_ENABLE 5347#if EV_CLEANUP_ENABLE
4204void 5348void
4205ev_cleanup_start (EV_P_ ev_cleanup *w) 5349ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4206{ 5350{
4207 if (expect_false (ev_is_active (w))) 5351 if (ecb_expect_false (ev_is_active (w)))
4208 return; 5352 return;
4209 5353
4210 EV_FREQUENT_CHECK; 5354 EV_FREQUENT_CHECK;
4211 5355
4212 ev_start (EV_A_ (W)w, ++cleanupcnt); 5356 ev_start (EV_A_ (W)w, ++cleanupcnt);
4213 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); 5357 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit);
4214 cleanups [cleanupcnt - 1] = w; 5358 cleanups [cleanupcnt - 1] = w;
4215 5359
4216 /* cleanup watchers should never keep a refcount on the loop */ 5360 /* cleanup watchers should never keep a refcount on the loop */
4217 ev_unref (EV_A); 5361 ev_unref (EV_A);
4218 EV_FREQUENT_CHECK; 5362 EV_FREQUENT_CHECK;
4219} 5363}
4220 5364
4221void 5365void
4222ev_cleanup_stop (EV_P_ ev_cleanup *w) 5366ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT
4223{ 5367{
4224 clear_pending (EV_A_ (W)w); 5368 clear_pending (EV_A_ (W)w);
4225 if (expect_false (!ev_is_active (w))) 5369 if (ecb_expect_false (!ev_is_active (w)))
4226 return; 5370 return;
4227 5371
4228 EV_FREQUENT_CHECK; 5372 EV_FREQUENT_CHECK;
4229 ev_ref (EV_A); 5373 ev_ref (EV_A);
4230 5374
… …
4241} 5385}
4242#endif 5386#endif
4243 5387
4244#if EV_ASYNC_ENABLE 5388#if EV_ASYNC_ENABLE
4245void 5389void
4246ev_async_start (EV_P_ ev_async *w) 5390ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT
4247{ 5391{
4248 if (expect_false (ev_is_active (w))) 5392 if (ecb_expect_false (ev_is_active (w)))
4249 return; 5393 return;
4250 5394
4251 w->sent = 0; 5395 w->sent = 0;
4252 5396
4253 evpipe_init (EV_A); 5397 evpipe_init (EV_A);
4254 5398
4255 EV_FREQUENT_CHECK; 5399 EV_FREQUENT_CHECK;
4256 5400
4257 ev_start (EV_A_ (W)w, ++asynccnt); 5401 ev_start (EV_A_ (W)w, ++asynccnt);
4258 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 5402 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit);
4259 asyncs [asynccnt - 1] = w; 5403 asyncs [asynccnt - 1] = w;
4260 5404
4261 EV_FREQUENT_CHECK; 5405 EV_FREQUENT_CHECK;
4262} 5406}
4263 5407
4264void 5408void
4265ev_async_stop (EV_P_ ev_async *w) 5409ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT
4266{ 5410{
4267 clear_pending (EV_A_ (W)w); 5411 clear_pending (EV_A_ (W)w);
4268 if (expect_false (!ev_is_active (w))) 5412 if (ecb_expect_false (!ev_is_active (w)))
4269 return; 5413 return;
4270 5414
4271 EV_FREQUENT_CHECK; 5415 EV_FREQUENT_CHECK;
4272 5416
4273 { 5417 {
… …
4281 5425
4282 EV_FREQUENT_CHECK; 5426 EV_FREQUENT_CHECK;
4283} 5427}
4284 5428
4285void 5429void
4286ev_async_send (EV_P_ ev_async *w) 5430ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT
4287{ 5431{
4288 w->sent = 1; 5432 w->sent = 1;
4289 evpipe_write (EV_A_ &async_pending); 5433 evpipe_write (EV_A_ &async_pending);
4290} 5434}
4291#endif 5435#endif
… …
4328 5472
4329 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 5473 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4330} 5474}
4331 5475
4332void 5476void
4333ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 5477ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT
4334{ 5478{
4335 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 5479 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4336
4337 if (expect_false (!once))
4338 {
4339 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
4340 return;
4341 }
4342 5480
4343 once->cb = cb; 5481 once->cb = cb;
4344 once->arg = arg; 5482 once->arg = arg;
4345 5483
4346 ev_init (&once->io, once_cb_io); 5484 ev_init (&once->io, once_cb_io);
… …
4359} 5497}
4360 5498
4361/*****************************************************************************/ 5499/*****************************************************************************/
4362 5500
4363#if EV_WALK_ENABLE 5501#if EV_WALK_ENABLE
4364void ecb_cold 5502ecb_cold
5503void
4365ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5504ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT
4366{ 5505{
4367 int i, j; 5506 int i, j;
4368 ev_watcher_list *wl, *wn; 5507 ev_watcher_list *wl, *wn;
4369 5508
4370 if (types & (EV_IO | EV_EMBED)) 5509 if (types & (EV_IO | EV_EMBED))

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